Вентиляция в сип доме: обзор лучших вариантов и схем обустройства

Вентиляция в доме из СИП панелей своими руками: схемы, устройство

Содержание статьи:

Одним из минусов домов из СИП панелей является плохая вентиляция. О ней свидетельствует конденсат на окнах, плесень и сырость в углах.

Задача вентиляции в СИП доме

Дом из СИП панелей

Это качественный воздухообмен, без сквозняка. Еще несколько лет назад вентиляция дома из СИП панелей обустраивалась с естественной тягой, кондиционированием, сегодня эта технология считается устаревшей и не эффективной.

Естественная тяга не оправдывает себя, если дом ниже 3 этажей. Согласно физическим законам для хорошей тяги необходим значительный перепад высот. Но СИП дома не возводят выше двух этажей. На интенсивность тяги при естественной системе вентиляции влияет температура воздуха на улице, чем она ниже, тем лучше работает система. И еще один существенный недостаток – зимой с током воздуха из дома выдувается много тепла.

Вытяжная принудительная вентиляция дома из СИП панелей лишена первых двух недостатков, но она также интенсивно выдувает из дома тепло. К тому же, вытяжные вентиляторы шумны и берут много электричества.

Значение вентиляции в домах из СИП панелей

Несмотря на то, что СИП панели абсолютно безвредны для здоровья человека, вентиляция в СИП доме нужна. Застройщик монтирует дом вместе с вентиляционной системой. Гарантия на конструкцию 5 – 10 лет, она распространяется и на все инженерные узлы.

Зачастую дома снабжаются лишь вытяжными вентиляторами на кухне, в туалете и ванной, которые выгоняют воздух по трубам наружу.

Но, по мнению некоторых специалистов, такой вентиляции недостаточно. Поэтому предлагается принудительная вентиляция приток-выдув. Схема ее работы проста и эффективна: вытягивая из помещения отработанный воздух, система фильтрует его, добавляет свежего воздуха с улицы и нагоняет обратно в дом. В доме постоянно поддерживается одинаковая температура. Цена системы вместе с монтажом составляет около 2 тысяч долларов США. Время от времени необходимо менять фильтры. Однако если подсчитать, во сколько обойдется ремонт каркаса здания, то цена установки не кажется такой высокой.

Монтаж вентиляции в СИП домах

Установка качественной вентиляции в СИП домах значительно продлит срок эксплуатации строения. Нередко конденсат собирается на входных дверях, устроенных на металлическом каркасе. Предотвратить скапливание конденсата можно, установив дополнительную дверь из древесины либо пристроив к дому снаружи небольшой тамбур площадью около двух квадратных метров.

90000 Key Factors for Poultry House Ventilation 90001 90002 Ventilation in a poultry house supplies fresh air that is essential to sustain life. It also helps reduce the extremes of temperature, humidity and air contamination to tolerable limits for confined chickens. 90003 90004 Improved ventilation systems have also made possible the high density populations of livestock and poultry in confinement, thus reducing the building cost per unit housed. This is economically important since it reduces production and labour costs.90003 90004 Ventilation air removes excess heat, moisture, dust and odours from the building and, at the same time, dilutes airborne disease organisms. Properly designed winter systems also conserve energy by utilising heat generated by the birds. Providing proper ventilation to poultry is an art but it can be mastered by any determined and willing poultry grower. It is a challenge, however, since poultry houses are different and ventilation requirements change with time of day, season, temperature, humidity, wind, bird age and density.This publication discusses the general principles of poultry house ventilation. 90003 90008 Principles of Ventilation 90009 90002 If air is not replaced in an enclosed building where poultry is confined, the air composition changes. The concentration of carbon dioxide, ammonia and other harmful gases will increase to unacceptable levels. Table 1 indicates the level of some of the gases that research has shown to be critical and the level that is desirable. As the ventilation system exchanges the air in the building, it brings in the oxygen needed to sustain life and carries out the harmful gases and undesirable odors caused by respiration and waste decomposition The system also dilutes airborne disease organisms and keeps them at a tolerable level for the birds ‘health.90003 90012 90013 90014 90015 90016 Table 1. Common gas levels in poultry houses 90017 90018 90019 90014 90021 Gas 90022 90021 Symbol 90022 90021 Lethal 90022 90021 Desirable 90022 90019 90014 90031 90016 Carbon Dioxide 90017 90018 90031 CO 90036 2 90037 90018 90031 Above 30% 90018 90031 Below 1% 90018 90019 90014 90031 90016 Methane 90017 90018 90031 CH 90036 4 90037 90018 90031 Above 5% 90018 90031 Below 1% 90018 90019 90014 90031 90016 Ammonia 90017 90018 90031 NH 90036 3 90037 90018 90031 Above 500ppm 90018 90031 Below 40ppm 90018 90019 90014 90031 90016 Hydrogen Sulfide 90017 90018 90031 H 90036 2 90037 S 90018 90031 Above 500ppm 90018 90031 Below 40ppm 90018 90019 90014 90031 90016 Oxygen 90017 90018 90031 O 90036 2 90037 90018 90031 Below 6% 90018 90031 Above 16% 90018 90019 90014 90101 90018 90019 90104 90105 90002 Ventilation must be used to remove excess moisture from the house.Proper ventilation reduces relative humidity, promotes health and prevents moisture from condensing on the walls and ceiling. When heated, air expands in volume and can hold more moisture. The moisture-holding capacity of air doubles each time the air temperature is raised approximately 20 ° F. (Figures 1 and 2). This characteristic helps remove moisture from houses during cold weather. 90003 90108 90004 Figure 1. Heated air expands and has the capacity to absorb more moisture 90003 90111 90112 90004 Figure 2.Moisture-holding capacity of air at various temperatures 90003 90008 Building Insulation 90009 90002 Insulation can dramatically affect the level of supplemental heat and ventilation requirements. It reduces heat losses or gains through the walls and ceiling, controls condensation and reduces the supplemental heat requirements. The effectiveness of insulation is measured by its R-value. The higher the R-value, the more effectively the insulation reduces heat transfer. The optimum amount of insulation for poultry housing depends on numerous factors, such as its cost in relation to fuel cost and local climatic conditions.Because of these factors, optimum insulation levels vary for every situation. Minimum R-values ​​of 9 in the walls and 12 in the ceilings are suggested for Georgia. 90003 90004 Most insulation products need to be protected with a vapour barrier. Wet insulation loses its effectiveness and does not regain its original insulation value when it dries. Structural framing in insulated walls can also be damaged without adequate vapor barriers. Place vapour barriers on the inside surface of the insulation and be sure they have a «Perm-Rating» of 1 or less for broiler housing.Many high-density insulation boards — 4-mil polyethylene film, aluminium foil, asphalt building paper — meet this requirement. 90003 90008 Ventilation Systems 90009 90002 Ventilation systems are generally divided into two types: (1) natural air flow system and (2) mechanical air movement (fans). 90003 90004 Because of varying ventilation requirements, the two distinctly different systems are sometimes combined in an attempt to provide comfort to the chickens during varying climatic conditions at minimum cost.90003 90127 Natural air flow system 90128 90002 90016 Basic Requirements: 90017 A good ventilation system must have an adequate supply of air to the building and an adequate air distribution system inside the building. The prevailing wind direction, building orientation and site features control air availability. 90003 90004 Heat is also exchanged from the air when air is used to evaporate water. Water’s heat of vaporisation is approximately 1,000BTU per pound (or pint) of water evaporated.We make use of vaporisation in ventilation cooling (evaporative cooling) in the summer to improve the comfort of the poultry. 90003 90004 The most practical way to calculate the air flow is by the following rule of thumb: provide 0.1 cubic feet of air flow per minute per pound of body weight of the chickens in the house for each 1 ° F of temperature of outside air ( Table 2). 90003 90012 90013 90014 90140 90016 Table 2. Suggested air flow 90017 90018 90019 90014 90146 Outside air temperature 90022 90148 Cu.ft. of air per minute per lb. of body wt. (At 30-60% relative humidity) 90022 90019 90014 90021 (° F) 90022 90021 (° C) 90022 90019 90014 90031 40 90018 90031 4.4 90018 90031 0.40 90018 90019 90014 90031 60 90018 90031 15.6 90018 90031 0.60 90018 90019 90014 90031 80 90018 90031 26.7 90018 90031 0.80 90018 90019 90014 90031 100 90018 90031 37.8 90018 90031 1.00 90018 90019 90104 90105 90002 If you can, orient the houses in an east-west direction.Ventilated shelters must be exposed to the wind, so place the building on a high site rather than in a low place. Keep natural or man-made wind barriers at least 100 feet away from the side where the prevailing wind enters the building. Windbreaks reduce natural air movement for a distance five to 10 times their height. 90003 90004 Proper design and construction details will ensure good distribution and air movement. Eave heights should be six to nine feet above the outside grade. Roof slopes should rise four to five inches per running foot.The warm-moist air produced by the broilers rises toward the roof and the steeper roof slope creates a «chimney» effect, so ridge ventilation is recommended. Place ventilators 30 to 50 feet apart. 90003 90004 You may wish to add a one- to two-inch-wide vent along the side of the building near the eave that can be covered when the curtain is completely closed. When the curtain is lowered, a uniform opening will run the length of the building. Using the curtain alone may not provide a uniform opening since the curtain may sag in places.90003 90004 A small uniform opening ensures that minimum ventilation rates will enter the house high above the birds during cool weather. This also reduces draughts and allows the entering air to mix and be tempered before coming into contact with the birds. 90003 90004 Curtains that can be opened should be placed on both side walls along the length of the building. The curtains should extend from approximately 30 inches above the floor and should overlap the upper part of the side wall by approximately four inches.90003 90004 During the summer, centre fans in a curtain-sided house will be used almost continuously. End fans will be used mostly during the brooding period. Place exhaust fans at even intervals down the sidewalls in order to remove stale air, odors and moisture. If partial house brooding is used, place at least one 36-inch exhaust fan in the sidewall for each 100-foot length of house. The remaining part of the house should have a 36-inch fan for each 150 feet of house length. These fans should be controlled by a thermostat and a timer for periodic air removal.90003 90004 90016 Winter Ventilation: 90017 Systems for cold weather are much more complicated than for warm weather because houses must be closed tightly for comfort and to conserve energy. Tight enclosures trap the gases, odors, humidity, etc. that must be dealt with continuously for the health of the birds. Table 2 will help you determine the minimum amount of ventilation air required during the growing period. 90003 90004 Controls have been developed that can automatically operate curtains, windows and various types of equipment, allowing precise ventilation of the poultry house.Motor-driven winches (thermostatically controlled) are available to provide automatic adjustment of curtains and other types of air inlets in order to maintain the desired atmosphere inside the poultry house. 90003 90004 90016 Summer Ventilation: 90017 A natural air system is used for warm weather conditions in houses with side curtains. This system uses temperature differences and natural air movement to remove excess heat and moisture, and to supply oxygen. 90003 90004 Changing environmental conditions within a short period of time reduces the effectiveness of this system in modern poultry production.To maintain a constant temperature to promote maximum comfort for the birds, some degree of mechanical air movement must be provided in conjunction with the natural air system. 90003 90127 Mechanical ventilation system 90128 90002 Mechanical air movement is required to properly ventilate a house in all extreme climatic conditions. 90003 90004 These mechanical systems use electric fans as principal components to exchange air in the building. They can be divided into two distinct types: (1) negative pressure and (2) positive pressure.90003 90004 90016 Negative (Exhaust) System: 90017 In the negative pressure system, fans are arranged to expel air from the building. In doing so, they create a partial vacuum or negative pressure inside the house. The pressure difference pulls fresh air through inlets into the poultry house (Figure 3). Distribute inlets uniformly around the perimeter of the building. The location, distribution and size of the fans and inlets are critical if all areas of the house are to be ventilated. Design specifications are available from equipment manufacturers and Extension engineers.90003 90225 90004 Figure 3. Typical exhaust ventilation system with slot inlets and exhaust fans 90003 90002 The location of the fans and air inlets depends upon the width of the building. For buildings up to 40 feet wide, place the fans in one sidewall. Fans on the sidewall opposite the prevailing wind will reduce back-pressure on the fan. The fans provide much better ventilation if they are spaced uniformly along the wall. Buildings more than 50 feet wide need fans on both sidewalls. 90003 90004 Air inlet size is critical to proper functioning of the ventilation system.The air inlet velocity must be high enough to ensure fresh air reaches all portions of the facility. However, the air velocity must not be so high that the birds are subject to draughts. Install inlets so air enters and moves toward the ceiling. This arrangement allows the cold ventilating air to be tempered somewhat by mixing with the warm air already in the house before it comes into contact with the birds. This helps reduce draughts. 90003 90004 Uniform air distribution in the poultry house can only be ensured if the building is airtight except for the properly sized, uniformly spaced air inlets.Leaks around doors and around other openings in the walls or ceiling must be stopped. For these reasons, as well as a tendency to short circuit, pressure systems are difficult to manage in curtain-sided houses. 90003 90004 90016 Positive Pressure System: 90017 A positive pressure system uses fans to push air into the building and create a positive pressure. The pressure difference causes the air to move — in this case out through louvres or other outlets. A number of positive pressure systems are used in the poultry industry.One system pushes warm air into the house and mixes it with inside air throughout the house. In another type, the warm air is pushed the length of the house through plastic tubes or ducts with outlets. This system distributes heat and mixes air in the poultry house. 90003 90008 Mixing of Ventilation Air 90009 90002 Simply passing air through the building does not ensure proper ventilation (Figure 4). Proper ventilation introduces fresh air uniformly, mixes it well with house air and circulates it properly through the house.90003 90242 90004 Figure 4. Ventilation air must be mixed properly to prevent hot spots and dead air pockets 90003 90002 If old air is allowed to flow into a warm area without direction or velocity, it will cause fog and / or create draughts on the birds. In the summer the air must be given controlled direction to ensure uniform air distribution and prevent ‘dead air’ pockets. 90003 90004 Place fans near the ceiling down the centre of the house and on the extreme ends of the house to circulate and mix the air.The fans mix the air within the house to prevent warmer air from remaining near the ceiling. 90003 90004 The supplemental heat requirements for broiler housing vary with the insulation level, ventilation rates, outdoor temperatures and management practices. The addition of supplemental heat allows the operator to maintain desired temperature levels during cold weather and while the birds are young. 90003 90004 Mixing and circulating the air in enclosed houses during cold weather utilizes heat generated by the birds to reduce supplemental heat requirements and keep litter dry.90003 90008 Components of a Mechanical Ventilation System 90009 90002 A ventilation system has three principal components: (1) the fans required to move the air through the building, (2) air inlets and outlets and (3) a set of controls (thermostats and timers) to regulate fan operation. 90003 90004 90016 Fans: 90017 In selecting fans for a specific ventilation system, the wide range of climatic conditions must be considered as well as the ventilation system under which they will be used.Rugged, top-quality equipment must be used when operating under adverse conditions. 90003 90004 The Air Movement Control Association, Inc., has set up standard test codes and procedures for fan manufacturers to use in rating the performance of fans. These ratings assure the buyer that the fan will deliver the volume of air specified. 90003 90004 Generally speaking, it is better to select oversized rather than undersized fans to supply the required ventilation. A safety factor is provided in case any one fan fails to operate.However, you can save money in both initial and in operating costs by using correctly sized fans. Operating costs can be reduced by using efficient motors on the fans. 90003 90004 The fans should be wired by competent electricians and in accordance with the National Electrical Code and any applicable local codes. 90003 90004 90016 Inlets and Outlets: 90017 The rate of air exchange is determined by the fans but the uniformity of air distribution depends primarily on the location, design and adjustment of the air inlets.90003 90004 Air inlet velocities of 600 to 1,000 feet per minute (fpm) are recommended. A good rule of thumb for sizing inlets to achieve this velocity range is 90003 90273 90002 Since ventilation requirements change with bird age, body weight and outside temperature (Table 2), slot widths have to change also. Typical slot width ranges are between one and six inches. Widths can be controlled either manually or with static pressure sensitive automatic controls. 90003 90004 90016 Controls: 90017 Fans are usually controlled by thermostats or thermostats in combination with interval timers.A single stage thermostat will control one or more single speed fans by activating the fan when the temperature rises and stopping it when the air temperature drops to a selected level. A thermostat with a double throw switch will control a two-speed fan, automatically changing from high to low speed as temperature changes to a selected level. Fans with motor-operated shutters should be controlled by the same thermostat to ensure their simultaneous operation. 90003 90004 The interval timer permits intermittent operation of one or more fans because the fans are not usually operated continuously in cold weather.Most timers operate on a 10-minute cycle to approximate the air delivery of a continuously operating fan. A continuously operating fan providing the proper amount of ventilation air would not provide the air velocities required for proper mixing. A thermostat interconnected with the timer overrides the system when more ventilation is needed to remove excess heat. 90003 90004 Relays are necessary to protect the motors and thermostats when a group of fans are to be controlled simultaneously by a single thermostat or timer.90003 90008 General Requirements for Effective Installation 90009 90286 90287 Design the system with extreme climatic conditions of the area in mind. 90288 90287 Follow the design and specifications when you install the ventilation equipment. 90288 90287 For system balance, the building should be filled with birds to the designed capacity. 90288 90287 Insulation of the structure must be based on the intended use and local weather conditions. 90288 90287 Insulation should be of the proper type and installed so as to be protected from rapid deterioration.90288 90287 Clean the ventilation system regularly and adjust it seasonally. 90288 90287 Provide supplemental heat and cooling for extreme climatic conditions. 90288 90287 All equipment (fans and controls) should be serviced periodically and maintained in good condition. 90288 90287 Provide good management for the poultry, the building and the ventilation system. 90288 90287 A suitable alarm system and / or stand-by electric generating equipment should be available in case of power failure.90288 90307 90008 References 90009 90002 Poultry and Livestock Ventilation Manual. Big Dutchman, Zeeland, Michigan. 90003 90004 90313 Environmental Control Handbook for Poultry Confinement Operations. Acme Engineering & Manufacturing Corp., Muskogee, Oklahoma. 90314 90003 90004 Esmay, Merle L., 1978. Principles of Animal Environment. Textbook Edition, AVI Publishing Company, Inc., Westport, CT. 90003 90004 90313 January 2012 90314 90003 .90000 House Ventilation Images, Stock Photos & Vectors 90001 You’re currently using an older browser and your experience may not be optimal. Please consider upgrading. Learn more. ImagesImages homeCurated collectionsPhotosVectorsOffset ImagesCategoriesAbstractAnimals / WildlifeThe ArtsBackgrounds / TexturesBeauty / FashionBuildings / LandmarksBusiness / FinanceCelebritiesEditorialEducationFood and DrinkHealthcare / MedicalHolidaysIllustrations / Clip-ArtIndustrialInteriorsMiscellaneousNatureObjectsParks / OutdoorPeopleReligionScienceSigns / SymbolsSports / RecreationTechnologyTransportationVectorsVintageAll categoriesFootageFootage homeCurated collectionsShutterstock SelectShutterstock ElementsCategoriesAnimals / WildlifeBuildings / LandmarksBackgrounds / TexturesBusiness / FinanceEducationFood and DrinkHealth CareHolidaysObjectsIndustrialArtNaturePeopleReligionScienceTechnologySigns / SymbolsSports / RecreationTransportationEditorialAll categoriesEditorialEditorial homeEntertainmentNewsRoyaltySportsMusicMusic homePremiumBeatToolsShutterstock EditorMobile appsPluginsImage resizerFile converterCollage makerColor schemesBlogBlog homeDesignVideoContributorNews 90002 PremiumBeat blogEnterprisePric ing 90003 Log in 90004 90003 Sign up 90004 90003 Menu 90004 FiltersAll images 90009 90010 All images 90011 90012 Photos 90011 90014 Vectors 90011 90016 Illustrations 90011 90018 Editorial 90011 90020 Footage 90011 90022 90011 90024.90000 Ventilation in the poultry house makes a world of difference 90001 90002 In West Java Indonesia, many broiler farmers grow their birds in traditional open poultry houses. With a constant 30ºC and high humidity the challenges are huge. Heat stress casts a shadow over the performance and profitability of small and medium size independent farms. 90003 90002 About 60% of the poultry meat sector in Indonesia is integrated and in the hands of large players like CP Foods and Japfa Comfeed. In modern poultry facilities with good farm managers these companies are able to compete with producers all over the world.The other 40% of broilers are produced on small and medium sized independent farms, mainly in open house systems, without too much technology involved. The Indonesian government stimulates these smaller enterprises, but a lack of knowledge, together with difficulties in financing new investments results in only a slow improvement of production results. That is the main reason why the local government, together with the Dutch department of foreign affairs started a development programme. 90003 90002 The houses are of the semi closed type, the side walls are made of plastic curtain material.Ventilation is mechanical, there is a pad cooling system and the whole climate is monitored by a Sommen climate computer. One house has tunnel ventilation, the other cross ventilation, to test and learn from both systems. Photo: Fabian Brockötter 90003 90008 The DIFS-Live project 90009 90002 DIFS-live stands for Dutch — Indonesian programme on Food Security in Livestock, has the goal to develop practical solutions to guarantee a safe and sustainable food production and -at the same time- make sure independent farms are able to compete with the integrated operations .The project really comes to life at a demo farm, the Modern Broiler Learning Centre (MBLC). This farm shows that with a relative low level of investments, major improvements are within reach. Challenges such as heat stress, disease pressure and management conditions can be improved, with immediate positive consequences for profitability, animal- and farm performance. 90011 Poultry World 90012 decided to have a look for itself in the town of Bandung, together with senior researcher of Wageningen University, Rick van Emous.90003 90008 Challenges of poultry production in Indonesia 90009 90002 Raising broilers in traditional open houses has many challenges. The houses are built with materials at hand, like bamboo and some tarps, and are all naturally ventilated. 90003 90002 Feeding is done manually from bagged feed and in the first week the young broilers are kept warm during the night with charcoal stoves and / or gas heaters. The quality of the day-old chick is not optimal, the feed is of inferior quality, disease pressure is high, water has a high bacterial count and management is often suboptimal.90003 90002 For the economic evaluation, calculations were made for the investment on a farm with only open housing (pictured) and on a farm with only closed housing. Photo: Rick van Emous 90003 90008 Up to 20% mortality 90009 90002 On top of that, the chicks are constantly subjected to heat stress, every day. This together leads to a mortality of up to 20%. The one proven remedy to keeping the birds alive is through the use of antibiotics.In feed antibiotics are still a standard in Indonesia. On top of that the chicks get regular extra treatments, starting immediately upon arrival, followed by a shuffle programme until a week prior to slaughter. Mr van Emous: «The inventory of the medicine cabinet tells you the whole story. This is a nightmare scenario when it comes to over-usage of antibiotics in relation to the possible negative side effects for human health and antibiotic resistance. » 90003 90008 Modern Broiler Learning Centre (MBLC) 90009 90008 90002 The contrast between the traditional poultry houses and the Modern Broiler Learning Center is huge.The first flock outperformed Cobb breeding standards. Photo: Fabian Brockötter 90003 90009 90008 Housing construction 90009 90002 The contrast between the traditional poultry houses and the MBLC is huge. In the rolling hills outside of the city of Bandung local project partner PT Medion has built 2 brand new houses. They used steel instead of bamboo as the main building material, constructed a 2 story system, with 2 pens per floor. 90003 90008 Poultry house ventilation at MBLC 90009 90002 With 15 chicks per square meter, the facility as a capacity of 16,000 birds.The houses are of the semi-closed type, the side walls are made of plastic curtain material. Ventilation is mechanical, there is a pad cooling system and the whole climate is monitored by a Sommen climate computer. One house has tunnel ventilation, the other cross ventilation, to test and learn from both systems. «The use of tarps for the side walls gives us the possibility to switch back to natural ventilation in case of power outages. There is a generator installed, but there is no guarantee that diesel fuel is available all the time.We experience power outages on an average of once or twice a week «said Mr van Emous. 90003 90008 Biosecurity 90009 90002 On the complex there is a lot of attention paid on biosecurity, with cleaning and disinfection zones for both personnel and vehicles. Although, it is not always easy to work within standard procedures. During catching, which can stretch over a period of more than a week, several small trucks enter the facility. Besides movement and stress for the birds, the overall cleanliness of the vehicles and crates are far from ideal.90003 90008 First flock 90009 90002 The evaluation of the first flock of Cobb 500 birds showed that although there were some start up issues, the overall performance was good. The chicks were loaded on an average live weight of 1.97 kilogrammes on day 32, with a feed conversion of 1,50. Mortality was just 3.9%, less than could be expected with the suboptimal day-old chicks that were supplied. During the first week the chicks performed exactly according the growth curve of Cobb and from day 14 onwards they outperformed by 5-8%.At the end of the flock the birds outperformed by 6%. «They could have done even better, but we had some software issues with the climate computer and we lacked frequency modulators on the fans. In the third week of production the chicks were too cold due to a high airspeed in the house. We temporarily fixed the problem by opening the side walls some 10cm. » 90003 90002 PT Medion manager Yirhan Sim believes this project will help Indonesian poultry farmers to the next level.Photo: Fabian Brockötter 90003 90008 Further improvement 90009 90002 With the experience of the first flock Mr van Emous firmly believes that a step from 15 to 18 birds per square meter is feasible. «The fact that we are able to ventilate makes a world of difference. The birds in traditional houses do suffer immensely due to heat stress, that is something we prevent. To keep birds on a farm as the MBLC, with a management philosophy which incorporates all facets of poultry keeping, I am convinced that we can produce on or above breed standards, with a 70% reduction on antibiotic usage, «he stated.The intention of the project is not to promote a closed housing system, but to offer a total package solution that leads to a more profitable poultry operation. The experiences of the MBLC will be shared in courses and training sessions with local farmers. 90003 90008 Trend towards closed housing 90009 90002 Local project partner PT Medion sees a slow but irreversible transformation taking place in the Indonesian poultry meat production sector, from traditional to more modern housing systems.Manager Yirhan Sim: «10 years ago only 10% of the poultry houses were of the closed housing type. Nowadays that is 30%. Unfortunately it is not easy to invest in new houses at this moment in time. Banks are reluctant to finance more than 70% of the needed investments. The other 30% the farmers have to bring in, which is problematic because currently the farms are hardly making any money. Our project will prove that a modern poultry sector is profitable. » Mr Sim continues: «We want to take our poultry farms on a journey into the future.Profitability is key, but also trends in the reduction of antibiotics usage and animal health have a role to play. These themes are not exclusive to poultry farmers in more developed countries. » 90003 90002 Wageningen Economic Research Institute did a case study into the economics of closed versus open broiler houses in West Java. Better production performance leads to 11% lower production costs per kg final live weight, resulting in a payback period of the whole investment in a closed house of 4.5 years or less. Read more … 90003 .90000 How to Keep a Room Well-Ventilated With the Windows Closed | Home Guides 90001 90002 By Amanda Bell Updated December 19, 2018 90003 90002 Whether you’re simply trying to replace stale air with fresh or you’re completing a project that exposes you to fumes, you can ventilate a room without opening any windows. Although windows tend to provide the easiest ventilation option, a healthy flow of air throughout the room and your home can be achieved in numerous ways. 90003 90006 Focus on Doors 90007 90002 Opening all of the doors in the room that lead to other spaces can significantly improve airflow.Even without fans, open doors allow fresher air in and fumes and stale air out. If you have doors that open to the outside and have screens, keeping these open even for 10 minutes can drastically improve ventilation. Closing doors that lead nowhere — such as closet or pantry doors — can keep air moving out the other open doors rather than becoming trapped in an enclosed space. 90003 90010 Turn on Ceiling and Table Fans 90007 90002 If you have any ceiling fans in the room, keep these turned on at a medium to high setting.Prompting air movement and circulation, ceiling fans rotate the air between the top, sides and bottom of the room and can cause a breeze that can be strong enough to push fumes and stale air out the doorway. Table fans, although not quite as strong, can produce similar results. Anything that improves air circulation in the room aids in ventilation. 90003 90014 Set up Box Fans in Entrances 90007 90002 There’s a reason that professional painters and construction workers keep box fans on hand: Setting up these powerful, relatively cheap devices in doorways can pull air from outside the room in and push stale air or fumes out .While this is not a feasible option to use every day, it can make a huge difference when you’re working on a project that involves fumes, such as painting and staining, or when you’re waxing floors. 90003 90018 Turn on the Air 90007 90002 Your air conditioner can help to keep a room ventilated as well. Air conditioners remove heat from the air and constantly circulate the air in the home. This continuous exchange of air gets rid of stale air and fumes, replacing it with cleaner air. Regularly replacing the filter on your air conditioner can reduce allergens and odors, and keeping the air conditioner set to a relatively high temperature can reduce your cooling costs while still keeping your room ventilated.90003.