JP3178008U - A barn where you can take measures against heat and ventilation at the same time - Google Patents

Abstract

An object of the present invention is to provide a barn where heat protection and ventilation can be implemented simultaneously.
A water spray nozzle (1) for spraying water pumped up by a water circulation pump (2) from a water storage tank (8) is fixed to a cylindrical cavity frame (7). A heat exchanger cool pad 4 for receiving dispersed water, a ventilation fan 5 and duct vinyls 9 to 12 are provided.
[Selection] Figure 1

Description

The principle of the heat exchanger cool pad is cooling of the air using heat of vaporization.
Cool air is obtained with a heat exchanger cool pad and forced into the barn with an air intake fan. However, since the temperature inside the barn cannot be lowered evenly with the air intake fan alone, the cooling air is made efficient through duct vinyl. This is a method to reduce the temperature inside the barn.

Since the heat exchanger cool pad uses water as a circulation system, the replenishment of water is very efficient because only the amount of water that has been vaporized and disappeared remains.

The need for heat protection measures shows that the amount of eating out decreases as the temperature inside the barn rises above the appropriate temperature range.
(A) In egg-laying hens, there is a decrease in the egg-laying rate, an increase in the number of broken eggs, an increase in soft eggs, and an increase in dead chickens.
(B) In broilers, poor growth, increased thermal death, and increased waste due to food inspection
(C) Reducing the reproductive performance (increase in fertility) in pig farming, and reducing the weight gain in meat pigs leads to prolonged breeding days and poor feed requirements.
(D) In dairy cows, a decrease in milk yield and an increase in infertility are observed.
Obstacles appear.

In summer in Japan, measures against heat and ventilation are necessary to cope with subtropical temperatures.
It has been determined that it is effective to reduce the temperature of the barn by adopting a heat exchanger cool pad to obtain cool air and forcibly sending cool air by an intake fan.

The current main heat-prevention measures are to increase the number of ventilation fans in the barn and increase the air volume only to stir the air in the barn.
Although it is called the follower ventilation method, the cross ventilation method, or the tunnel ventilation method as a method of flowing the air in the barn, it is still the same as increasing the number of ventilation fans.
Large-scale farms and capital-capable farms use the windless method, and they can deal with a large amount of capital investment, but the number of ventilation fans does not decrease, power consumption is high, and energy saving targets and CO2 emissions reduction The current situation is far away.

By adopting a heat exchanger cool pad, water is poured into the heat exchanger cool pad with a water circulation pump with a shower nozzle, cold air is obtained, and cool air is sent to the whole barn through duct vinyl with an intake fan, By reducing the number of ventilation fans inside and reducing the temperature, the measures against heat and ventilation could be solved without problems.

Reduction in the number of ventilation fans will save power by reducing power consumption, and CO2 emissions will also be reduced by reducing power consumption.

Using a heat exchanger cool pad, the temperature measurement result when the water is poured from the water circulation pump with a shower nozzle to obtain cold air, and the air is forcibly sent into the barn with the intake fan through the duct vinyl, the outside temperature is 36.5 ° C intake fan diameter 60cm, when the capacity of 150m ³ ~160m ³ in air volume per minute
(Example I) Farm: 31.2 ° C at 10m from the cold wind inlet, 31.1 ° C at 20m, 31.7 ° C at 30m, 32 ° C at 60m, 32.5 ° C at 80m
(Example II) External temperature 38 ℃ (mid August)
32m at 10m from cold air inlet, 32.8o at 20m
Met. From the measurement result, regardless of the structure of the barn, the method of sending cool air with duct vinyl is 4.7 to 5.3 ° C in the difference from the outside temperature in Example I (Example I), 5.4 to 6.2 ° C in (Example II) It is judged that there is a sufficient effect as a heat protection measure.

Schematic of sending cold air into the barn

Due to the importance of heat protection measures, the amount of food consumed decreases as the temperature rises above the appropriate temperature range, and in each livestock type, the egg-laying rate decreases, egg breaks, soft eggs increase, poor growth in broilers, Increased thermal death, decreased reproductive performance for pig farming, decreased weight gain for beef pigs, prolonged breeding days, worsened requirement rate, decreased milk yield for dairy cows, increased unfertility. This measure is necessary.

By adopting a heat exchanger cool pad, getting cool air from the heat of vaporization and sending it to the whole barn through the duct vinyl by the intake fan, the temperature in the barn decreases, the number of ventilation fans can be reduced, and heat protection measures can be taken at the same time Therefore, it is judged that the effect of utilization is great from an industrial point of view as it leads to reduction of power consumption and reduction of CO2 emissions.

DESCRIPTION OF SYMBOLS 1 Water spray nozzle 2 Water circulation pump 3 Water supply pipe 4 Heat exchanger cooler pad 5 Intake fan 6 Duct vinyl 7 Frame 8 Water storage tank 9 Parent duct vinyl 10 Child duct vinyl 11 Child duct vinyl 12 Child duct vinyl

Claims (1)

  The present invention combines a heat exchanger cool pad, a cylindrical hollow frame, an intake fan, a water supply device, a water spray nozzle, a water circulation pump, a water storage tank, and a duct vinyl, and blows cool air to the entire barn, preventing heat and ventilation. Livestock barn

Images