STATIC PRESSURE TO MONITOR TUNNEL VENTILATION - One of the best yardsticks for evaluating a tunnel ventilation system is measuring wind speed. There are many choices in handheld wind meters ranging from wind speed only units to combo models measuring wind speed, temperature, and humidity. If the wind speed is lower than desired, the next step is to check the static pressure with either a portable manometer or a ventilation control monitor. With the ventilation system operating at full capacity, the house pressure should be between 0.05 to 0.08". If the static pressure is higher, the most likely cause is restricted airflow through the air inlet curtain or cool cell pad. Check to make sure the curtains drop entirely below the wall openings and are not bunching at the bottom. If a cool cell system is part of the inlet, scale or algae may be clogging the openings. Scale refers to the buildup of minerals that hard water leaves behind as it evaporates during the cooling process. Heavy deposits of scale require a broom to dislodge the debris and then rinsing them off the pad with a low-pressure hose nozzle. The best way to deal with scale is to prevent it from forming in the first place. Adding a descaling treatment to the water helps keep the minerals in suspension and prevents them from sticking to the pad. Nutrients in the water allow algae to grow and block the openings in the pad.

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Use static pressure to monitor tunnel ventilation

by Laurence Williams

The Poultry Site

 

With the summer heat settling in, it's not uncommon for ventilation problems to start showing up in tunnel ventilated buildings.

Even facilities that have performed well in the past may experience issues.

One of the best yardsticks for evaluating a tunnel ventilation system is measuring wind speed.

There are many choices in handheld wind meters ranging from wind speed only units to combo models measuring wind speed, temperature, and humidity.

If the wind speed is lower than desired, the next step is to check the static pressure with either a portable manometer or a ventilation control monitor.

With the ventilation system operating at full capacity, the house pressure should be between 0.05 to 0.08".

If the static pressure is higher, the most likely cause is restricted airflow through the air inlet curtain or cool cell pad.

Check to make sure the curtains drop entirely below the wall openings and are not bunching at the bottom.

If a cool cell system is part of the inlet, scale or algae may be clogging the openings.

Scale refers to the buildup of minerals that hard water leaves behind as it evaporates during the cooling process.

Heavy deposits of scale require a broom to dislodge the debris and then rinsing them off the pad with a low-pressure hose nozzle.

The best way to deal with scale is to prevent it from forming in the first place.

Adding a descaling treatment to the water helps keep the minerals in suspension and prevents them from sticking to the pad.

Nutrients in the water allow algae to grow and block the openings in the pad.

Adding algaecides to the recirculating water kills the algae and prevents it from re-establishing.

Allowing the pad to dry completely for several hours each day also stops algae growth.

The most critical management practice for cool cell maintenance is to drain and replace the water often.

Even with the use of chemical agents, a buildup of contaminants occurs in the trough.

How often to replace the water depends on water quality and the amount of the time the system operates each day.

Once a month is an absolute minimum during periods of heavy use to flush grit and dirt from the system.

If the static pressure is too low, the first reaction might be to add fans to increase airflow.

In many cases, especially in buildings where the airflow seemed adequate before, replacing the fan belts and pulleys will restore the proper airflow.

Slippage caused by worn belts and pulley cause fans to be less efficient and air delivery to suffer by as much as 20%.

Plan to replace all fan belts on an annual basis with the metal pulleys needing replacement about every four years.

A visual check after installing a new belt should show the belt riding high in the pulley groove. If a new belt sinks into the groove, then the pulley should be replaced.

Routine, scheduled maintenance on fans and evaporative systems is fundamental to providing pigs with adequate cooling during hot weather extremes.

Laurence Williams

The Poultry Site is a knowledge sharing platform offering premium news, analysis and information resources for the global poultry industry.

We report industry news from around the globe and our in-house editorial team writes articles focused on day-to-day production issues, global trade and markets and industry trends and innovations.

Our international team of contributors report on the 3Es – economics, environment and ethics – of the poultry industry from farm to fork.

The Poultry Site is published by Global Ag Media. The Poultry Site is supported by the following sister sites: El Sitio Avicola, The Pig Site, El Sitio Porcino, The Cattle Site, The Beef Site, The Dairy Site, The Meat Site and The Crop Site.

https://www.thepoultrysite.com/news/2020/08/use-static-pressure-to-monitor-tunnel-ventilation

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MEASURING THE WIND - How can we measure the wind? - Wind speed is measured with an anemometer. The faster the anemometer is spinning, the stronger the wind. You do not need an anemometer to estimate the wind speed. You can use a verbal scale, called the Beaufort scale, which describes the effect of the wind on everyday things like trees. Wind direction is measured with a wind vane. You can estimate the wind direction by yourself just by using your face as a "sensor." Face into the wind, and then record the direction you are facing, relative to north. The wind blows because air pressure is higher in one place than in another place. The air moves from areas of higher pressure to areas of lower pressure. Objects like buildings, trees, and hills affect the direction of the wind near the surface. To get the best idea of the wind direction, try to stand far away from such objects. A park or a playing field is the best place to observe the wind. Wind speed is measured with an anemometer. Most anemometers have four horizontal shafts arranged like the spokes of a wheel. The end of each shaft is cup-shaped. The wind pushes the concave side of the cup more than the convex side, so the anemometer spins in the wind. The faster the anemometer is spinning, the stronger the wind. You do not need an anemometer to estimate the wind speed. You can use a verbal scale, called the Beaufort scale, which describes the effect of the wind on everyday things like trees. Wind direction is measured with a wind vane.

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Measuring the Wind

How can we measure the wind?

.

Wind speed is measured with an anemometer. The faster the anemometer is spinning, the stronger the wind. You do not need an anemometer to estimate the wind speed. You can use a verbal scale, called the Beaufort scale, which describes the effect of the wind on everyday things like trees. Wind direction is measured with a wind vane. You can estimate the wind direction by yourself just by using your face as a "sensor." Face into the wind, and then record the direction you are facing, relative to north.

The American Geosciences Institute

 

 

The wind blows because air pressure is higher in one place than in another place.

The air moves from areas of higher pressure to areas of lower pressure.

Objects like buildings, trees, and hills affect the direction of the wind near the surface.

To get the best idea of the wind direction, try to stand far away from such objects.

A park or a playing field is the best place to observe the wind.

Wind speed is measured with an anemometer.

Most anemometers have four horizontal shafts arranged like the spokes of a wheel.

The end of each shaft is cup-shaped. The wind pushes the concave side of the cup more than the convex side, so the anemometer spins in the wind.

The faster the anemometer is spinning, the stronger the wind.

You do not need an anemometer to estimate the wind speed.

You can use a verbal scale, called the Beaufort scale, which describes the effect of the wind on everyday things like trees.

Wind direction is measured with a wind vane.

One end of the vane has a small, heavy object, and the other end has a flat object with a large area.

The wind pushes the flat object more than the small, heavy objects, so the vane swings around to be parallel to the wind.

You can estimate the wind direction by yourself just by using your face as a "sensor."

Face into the wind, and then record the direction you are facing, relative to north.

The American Geosciences Institute

AGI was founded in 1948, under a directive of the National Academy of Sciences, as a network of associations representing geoscientists with a diverse array of skills and knowledge of our planet. The Institute provides information services to geoscientists, serves as a voice of shared interests in our profession, plays a major role in strengthening geoscience education, and strives to increase public awareness of the vital role the geosciences play in society’s use of resources, resilience to natural hazards, and the health of the environment.

AGI is a not-for-profit 501(c)(3) organization dedicated to serving the geoscience community and addressing the needs of society. AGI headquarters are in Alexandria, Virginia.

AGI's Mission:

The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people.

https://www.americangeosciences.org/education/k5geosource/content/weather/how-can-we-measure-the-wind

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CHICKEN POULTRY HOUSE VENTILATION - The key to getting the most out of evaporative cooling system is to move the maximum amount of air through the farm house. Wind speed and airflow in house are what keep birds alive. Growers have to understand this if they are to properly manage evaporative cooling systems then birds raise successfully during hot weather. Evaporative cooling systems is beneficial to the poultry industry but they are with their problems. In the combination with tunnel ventilation, they allow the production of healthy, profitable flocks during hot summer conditions. However, they can create high humidity conditions in the house, which have to be combated with increased air movement over the birds.

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Chicken Poultry House Ventilation

Ventilation & Temperature Controlling of the Chicken Poultry House

by hightop

One of the main reasons that poultry owners nowadays are concerned about are health and growth of their birds.

Apart from food and water intake, ventilation system, dampness and temperatures of the environment are the most common causes that affect the health of the birds a lot.

This blog post from HIGHTOP Metal Mesh Co. Ltd. Blog is about the in-depth consideration and insight of ventilation system and exhaust system of chicken poultry farm.

What is Ventilation?

Ventilation is a very critical system within many intensive agricultural opportunities, enabling enough transport (addition or removal) of heat, cooling dew, unhealthy gases such as carbon dioxide and healthy gases such as oxygen.

Why Do Poultry Farms Need Proper Ventilation?

Typically, open poultry sheds are strained to warm weather that match a chicken’s comfortable conditions.

These types of shed are normally characterized by a roof covering and low level boundary walls and / or mesh, arranging little to no form of climate control for the birds.

In these stages, ventilation systems are not applied, including some local heaters used as required.

Closed poultry farm sheds typically incorporate including some level of ventilation via either passive or mechanical terms in the attempt to control internal environment.

Chicken growth, health and nature are largely dependent upon internal conditions, that in turn, are largely a function of ventilation.

Ventilation requirements switch with ambient conditions (temperature, humidity, air), a chicken’s cases of development and bird density, size of shed and airtight condition, and as such, require protective consideration.

Temperature Controlling of Poultry House – Cooling Pad and Exhaust Fan

At this moment by considering all the prospects, you might have realized that cooling pads and exhaust fans are a must for every poultry farm.

Let’s consider an insight on the in-depth working procedure of both of them

Why This Is Important?

Poultry feed is too rich in energy/calories (same as energy density to chocolate cake including frosting).

The energy in these feed is used by the birds to grow up, produce more eggs, move, as well as, power the main functions of life (breathing, pumping blood, maintaining body temperature, immunity, etc).

Though we consider birds as very efficient animals, the true statement is that only 25% of the calories in the feed consumed is used for these functions, the remaining 75% is put off in the form of heat – heat a bird have to rid itself of in order to conserve normal body temperature and survive as well.

Many poultry farm are equipped with cooling systems which consist of some arrangement of cool cell pads at one end of the farm and large tunnel exhort fans at the opposite end.

To main operation of their evaporative cooling procedures, poultry farm growers must have a understanding of the relationship between temperature and humidity and the effect it has on birds.

The relationship have to be both simple and complicated.

How These Works?

HIGHTOP Metal Mesh Co. Ltd. has one of the most professional reputation over the globe regarding supply of poultry farm equipment including both exhort fans and cooling pads.

The HIGHTOP Exhaust Fan and Cooling pad have something that you can trust on it. A ventilation system alone never can reduce in-house temperature and below temperatures outside the house.

In hot conditions additional cooling systems must be utilized to keep chickens cool. Most often water is used to cool excess heat which is also known as evaporative cooling system.

We have designed the best quality and most efficient exhort fans and also cooling pads which meets the both end of healthy poultry farm environment and budget-friendly farming.

This is a list of how our cooling gadgets will help you to maintain a proper balanced poultry farm

·       Enough supply of oxygen and other essential gasses to the poultry farm from the outside.

·       Cooling and warming according to the requirement.

·       Heat dissipation and temperature distribution in a proper way.

·       Discharge of excess moisture, dust and dirt.

·       Supplying uncontaminated air to the chickens and birds inside the poultry house.

·       For high density population of livestock and poultry farm in confinement, useful ventilation is a must.

·       Ventilation carries away odors, dust, dampness and excess heat from the room and maintains a healthy environment.

Key To Getting Maximum of The Cooling System

The key to getting the most out of evaporative cooling system is to move the maximum amount of air through the farm house.

Wind speed and airflow in house are what keep birds alive. Growers have to understand this if they are to properly manage evaporative cooling systems then birds raise successfully during hot weather.

Evaporative cooling systems is beneficial to the poultry industry but they are with their problems.

In the combination with tunnel ventilation, they allow the production of healthy, profitable flocks during hot summer conditions.

However, they can create high humidity conditions in the house, which have to be combated with increased air movement over the birds.

Considering all of these, as a poultry niche specialist, I would really recommend you to think of HIGHTOP Poultry Exhaust System and Cooling pad.

Keep visiting our blog and website for more posts and updates.

https://www.china-chickencage.com/ventilation-temperature-controlling-of-the-chicken-poultry-house/