METHOD OF DETERMINING AND EVALUATING THERMAL CONDITIONS IN ZONES OF HEATING AND KEEPING OF YOUNG ANIMALS Russian patent published in 2017 - IPC A01K1/00 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture, namely to livestock sector, and can be used to assess efficiency of using specific types of sources of infrared heaters. Method of determining and evaluating thermal conditions in zones of heating and content of young animals involves measuring of radiation intensity E_meas. [W/m²], generated by radiation heaters. Measurement is performed at least in two or more points within heated area of specified specific norms of process parameters for animals of specific type and age. Wherein taking into account normal component of radiation intensity vector E_meas. to area of heating. By results of measuring of radiation intensity distribution E_meas. is determined in heating zone. Required calculated radiation intensity E_calc. [W/m²] is determined by formula E_calc(Q_r/F_an-Cϕb_m-n(τ_an-t_r))/ε, where Q_r is explicit heat release by animal [W], C is powered coefficient of radiation (4.65 W/m²K⁴), ϕ is coefficient of illumination of elementary animal surface on fencing room structures (rad), b_m-n=0.81+0.01τ_av is correction temperature coefficient of [°C], τ_av=0.5(τ_an+t_r) [°C], τ_an is average temperature of animal surface [°C], t_r is average temperature of room fencing [°C], F_an is animal surface [m²]. Values of apparent heat generation Q_r of specific type and age (weight) of animal, surface temperature τ_an are taken from homeothermal or thermoneutral temperature zone, and coefficient b_m-p and radiation temperature of room t_r by standards of technological design for specific method of growing animals and climatic parameters. Calculated radiation intensity E_calc.l is defined for values of critical temperature t_cr.l and apparent heat generation Q_r(t_cr.l) at t_cr.l. Calculated radiation intensity E_calc.l is defined for values of lower neutral temperature t_n.l and apparent heat generation Q_r(t_n.l) at t_n.l. Calculated radiation intensity E_calc.u is defined for values of upper neutral temperature t_n.u. and apparent heat generation Q_r(t_n.u) at t_n.u. calculated radiation intensity E_calc.u is determined for value of upper critical temperature t_cr.u and apparent heat generation Q_r(t_cr.u) at t_cr.u. Values of radiation intensity E_meas obtained by measurement are compared with calculated required parameters of radiation intensity, wherein ratio E_calc.tcr.l≤E_meas.min≤E_meas.max≤E_calc.tcr.u, where E_meas.min is minimum value of measured radiation intensity E_meas on heated area, E_meas.max is maximum value of measured radiation intensity E_meas on heated area, favorable thermal conditions are established for livestock management, ratio E_calc.tn.l≤E_meas.min≤E_meas.max≤E_calc.tnu establishes optimally comfortable temperature conditions for livestock management, at ratios E_meas.min≤E_calc.tcr.l<E_meas.max≤E_calc.tcr.u, E_meas.min≤E_calc.tcr.l≤E_calc.tcr.u≤E_meas.max, E_calc.tcr.l≤E_meas.min≤E_calc.tcr.u≤E_meas.ma set relatively favorable temperature conditions for livestock management.

EFFECT: invention allows to provide required temperature conditions and permissible degree of non-uniformity of heating of young animals in area of keeping.

1 cl, 1 dwg, 1 ex, 2 tbl