VOLTAGE REGULATORS FOR LOCAL HEATING OF PIGLETS

Imants Ziemelis, Arnolds Šķēle, Henriks Putāns, Uldis Iljins, Aldis Putāns

Abstract


The optimum air temperature in a pigsty for sows is 16-18 °C, but during the first days o f new born piglets life the temperature in their lairs ought to be 32...34 °C. Therefore the local warming for piglets is installed. The goal of the investigation was to measure the intensity o f heat irradiation under different kinds o f infra-red heaters, more often used on Latvia farms. An autonomous infra-red piglet warming systems have been developed. The experiment has showed, that during the first days o f piglets life the heater should be kept at the high, so that the irradiated area 0.3- 0.4 m2 has been. Gradually heaters have to be lifted up 3-4 times while.the warming area is 0.6-0.7 m2 in 40-45 days, when piglets are weaned. The temperature in a lair has to be regulated by change o f electric power of the heater. Several constructions of voltage regulators are worked out, which are able to ensure the temperature on the warmed surface automatically or manually, depending on the temperature in a pigsty and live mass of piglets. The automatic power regulation of the heaters decreases the consumption of electric energy more than 2 times.

Full Text:

PDF

References


Общесоюзные нормы технологического проектирования свиноводческих предприятий: ОНТП 2-85. М., 1986.- 65 с.

Местный обогрев полов в свинарниках: Тировой проект 802-0-1. - М, ВИЭСХ, 1976 - 16 с.

Ветра Е.А. Профилактика элементарной гиполагатни свиноматок в условиях Латв. ССР: Дис. на Соиск. уч.степ. канд. вет. наук. Сигулда, 1966.- 221 с.

Hammond John. Progress in Physiology of Farm Animals. London, 19954-1957., vol.1-3.

Ribalko V., Nozdrins N. u.c. Cūkkopja rokasgrāmata. - R.: Avots, 1983. -123 1pp.

Баев В.И. Практикум по электрическому освещению и облучению. Агромиздат, 199 - 173 с.

Removal of humic substances from water International Conference Norwegian University of Science and Technology (NTNU) Trodheim Norway 24-26 June 1999 wysiwyg://20/http:/www.ntnu.no/sevu/humicsubstances

Voelker В, M. Photooxidation of chromophoric dissolved organic matter in costal waters http:/Meb.mit.eduMsāthena.nnt.edu/org/c/civenv/people/faculty/voelker.html




DOI: http://dx.doi.org/10.17770/etr2001vol1.1967

Refbacks

  • There are currently no refbacks.