寒冷地区温室型犊牛舍温热环境研究

为研究低温条件下温室型犊牛舍内的环境状况,研究分析了舍外平均气温为（-10±1）℃、（-15±1）和（-20±1）℃条件下,温室型犊牛舍的空气温度、相对湿度、气流速度和有害气体等指标。结果表明,当外界平均气温为（-10±1）、（-15±1）和（-20±1）℃时,犊牛舍内平均气温分别为6.7℃、2.1℃和-0.6℃,平均相对湿度分别为64.1%、59.5%和75.2%,气流速度分别为0.05m/s、0.04m/s和0.04m/s,CO2浓度分别为2434mg/m3、2512mg/m3和2528mg/m3,而犊牛舍空气中未检测出H2S和NH3。结果说明,在外界平均气温-20℃以上的天气条件下,保温良好、换气充分的温室型犊牛舍,其舍内的温热环境和空气质量环境完全可以满足哺乳犊牛需要。

Research on Thermal Environment of Greenhouse Calf Barn in Cold Region

To investigate the environmental condition of greenhouse calf barn under cold condition, air temperature, relative humidity, air velocity and concentration of noxious gas of greenhouse calf barn were measured with an average outside temperature of （-10±1）, （-15±1） and（-20±1） ℃. Results of envi- ronmental measurements show that when the average temperature was （-10± 1）, （-15 ± 1） and（- 20 ± 1） ℃ outside, the average indoor temperature was 6.7, 2.1 and -0.6 ℃ respectively, the average relative humidity 64.1,59.5 and 75.2 % respectively, air velocity 0.05, 0.04 and 0.04 m/s-1 respectively, con- centration of carbon dioxide 2434, 2512 and 2528 mg/m3 respectively, but the concentration of NH3 and H2 S was not detected. The results demonstrate that the thermal environment and air quality in the green- house calf barn with good insulation and adequate ventilation meet the requirement of calves absolutely when average temperature outdoor was （ - 10 ± 1）, （ - 15 ± 1） and （ - 20±1） ℃.