Heat Exchangers for Swine Buildings

Posted in: Energy by admin on January 1, 1983 | No Comments

Up to 90% of the heat lost from heated livestock buildings is lost in the ventilation exhaust air. There has recently been a great deal of interest in the recovery and reuse of this energy with heat exchangers designed specifically for livestock building applications. Heat exchangers provide several advantages to the livestock producer, however the heat recovered is not necessarily “free”. The purpose of this paper is to evaluate the use of heat exchangers on the farm and to help the livestock producer decide if he would benefit from and could justify one on his or her farm.

Swine Housing and Equipment Handbook

Posted in: Energy by admin on | No Comments

This book was prepared by the Midwest Plan Service under the direction of agricultural engineers and consulting specialists. This book is a comprehensive look at housing and equipment for swine facilities. The heating, draft, ventilation and maintenance sections are of particular interest as they deal with energy issues.

The Efficiency of a Solar Concrete (Trombe) Wall in Providing Supplemental Heat

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

This paper examines the use of a Trombe-wall type solar wall for heating an existing farrowing barn at the PSC in Saskatoon, Sk. Data was obtained during January, February and March of 1982. The solar wall assisted heating 44% for the winter months of 1982. The system was able to warm the outside temperature. Average solar collection efficiency was 56%.

A Note on Energy Use in Housing Food Animals

Posted in: Energy by admin on | No Comments

Professor DeShazer emphasized many important concepts relative to energetic efficiency in food animal production. These concepts included an overview of general energy flow in livestock systems, energetics of domestic animals as affected by environmental temperature and factors that affect heating requirements of animal shelters. These general principles are reiterated in this discussion of his paper. Slightly different aspects of each concept are presented. Practical considerations that are important in applying research results to farm environments are emphasized.

Methodology for Determining Seasonal Energy Usage and Energy Conservation in Animal Housing Systems

Posted in: Energy by admin on | No Comments

Traditional methods for estimating energy usage have found form in the “degree day method”. The “bin” method lends itself to incorporating selected space temperatures and internal gains in a more encompassing manner. Manipulation of the bin method to incorporate variables such as space temperatures, internal gains, and ventilation rates is presented in this paper to provide a two-fold purpose. First, to provide an appropriate method to evaluate seasonal energy usage in livestock buildings in a simple, convenient manner using tabulated bin data. Second, to provide a technique to model livestock buildings for hourly computer simulation of energy usage.

Design and Optimization of a Subterranean Heat Exchanger for Swine Ventilation

Posted in: Energy by admin on | 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

Posted in: Energy by admin on | No Comments

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

Posted in: Energy by admin on | No Comments

Energy Data for Manure Handling Equipment

Posted in: Energy by admin on | No Comments

h

SEI – TES: Solar Heating for Swine Housing

Posted in: Energy by admin on | No Comments