Design and Optimization of a Subterranean Heat Exchanger for Swine Ventilation

Posted in: Energy by admin on January 1, 1982 | No Comments

During recent years livestock producers have been requesting design assistance for subterranean heat exchangers to preheat and precool ventilation air. Very little quantitative design information is available to permit the specification of a subterranean system that would perform with optimal economic effectiveness. The objective of this study was to determine design guidelines for a subterranean tubing system to preheat winter ventilation air for swine farrowing and nursery operations in Ohio. Ventilation rates, pressure drops and heat transfer parameters, as well as the economic/practicality of such a system is determined.

The Fundamentals of Livestock Building Ventilation

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Many of the ventilation designs of the past appear to have failed. There is no tragedy in failing. The real tragedy occurs only if we never learn why we have failed. In this report, an attempt is made first to try to understand why some ventilation systems have failed. With this understanding as a framework , the second part of the report presents some thoughts about how a successful ventilation system ought to be designed.

Energy Demand in Livestock Production

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Acute toxic exposure to gases from liquid manure

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Human ocupational hazards from swine confinement

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Controlling Swine Manure Odors Using Artificial Floating Scums

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The odor level evaluation was done by the panel members going directly over the barrel to evaluate the offensiveness of each treatment compared to the reference (strongest smelling barrel) on a scale from 10 to 70 (being the strongest smell). This method is based on comparison to the control and the odor level measured cannot be compared to results from other experiments. Permeability tests of the covers were done to measure H2S and ammonia off-gases. Considering the durability test, the odor panel test and the gas permeability test, rice hulls with waste oil and grass with waste oil where the most effective floating materials. However the use of waste oil mixed with other material may not be an environmentally sound way of controlling odor as waste oil can be considered hazardous waste.

Occupational asthma caused by allergy to pigs' urine.

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Energy Data for Manure Handling Equipment

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SEI – TES: Solar Heating for Swine Housing

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Solar Heated Earth Contact Pig Nursery

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In the spring of 1979, the University of Missouri Agricultural Engineering Department, USDA, USDOE, and eleven farmers initiated a project to demonstrate the use of solar energy in livestock buildings in Missouri.
One of these systems was built on the Leo Himmelberg farm near Glasgow in central Missouri. The system was completed in March 1980 and has operated continuously since. The system was designed to collect and store solar energy for use in preheating ventilation air in a nursery building.