JPH10292931A - Snow-ice air conditioning system having secondary heat exchanging function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cause an air stream of ice temperature and high humidity supplied to a load chamber to be adjusted to a middle temperature and a middle humidity, approach to a condition in the load chamber so as to avoid a cooling shock. SOLUTION: A supplying air passage and a returning air passage are provided with a short circuited air passage while a secondary heat exchanging is being carried out within an air passage 2 for feeding air from a cold heat source snow and ice storing clamber A for making a load chamber supplying cold air to a load chamber C and an air passage 1 for returning air from the load chamber C to the cold heat source chamber A so as to perform a more fine adjustment of air quality. In addition, there are provided a surrounding atmosphere feeding air passage 8 and an air discharging passage 9 for the external section so as to perform mixing with the suction air taken from the surrounding atmosphere and to improve air quality There are arranged a short-circuited air adjustment valve 3 for the supplied air and the returned-back air, a secondary heat exchanger 4 for the supplied air and the returned-back air, an air supplying and air discharging blower 5, a cold air supplying air passage 6, a load air stream suction air passage 7, a surrounding atmosphere feeding air passage 8 and an air discharging passage 9. In addition, a low temperature device B and a primary clamber D are arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the development of a simple air-conditioning system, such as a small gathering facility, a cooling system for a living space, a business space, or a low-temperature warehouse for storing and storing agricultural products.

[0002]

2. Description of the Related Art In the case of a conventional ice room warehouse and a cooling use, since the airflow of ice temperature and humidity is directly applied to a load body, the use is limited, and there is a lack of versatility in adjusting the temperature and humidity. However, it is not practical in an air-conditioning area.

[0003]

SUMMARY OF THE INVENTION Comfortable air-conditioning of human living space would be practical if the temperature of the ice temperature and humidity supplied to the load room can be adjusted to the medium temperature and the medium humidity, and the condition of the load room can be brought close to avoid the cooling shock. Become. In addition, in the storage of agricultural products, the varieties of adapted varieties are to be promoted, and the practical way is also opened for storage and storage of processed beverages.

[0004]

A secondary heat exchange system is provided in a wind path for sending cold air supplied from the load chamber to the load chamber from the cold / ice storage chamber and a wind path returning from the load chamber to the cold source chamber. In addition, a short-circuit air path is provided in the supply air path and the return air path to perform finer air quality adjustment. For further condition adjustment, air conditioning is performed by mixing with outside air taken in from the outside air introduction wind path. Hereinafter, a facility model to which the present system is applied will be described with reference to the drawings. FIG. 1 shows an arbitrary cross section of a model facility, and shows a configuration of a section list of facilities and installation of a system. While the facility has a heat insulating structure, the partition walls of the front room D and the load room C are also heat insulating walls, and the heat insulating wall between the load room C and the low temperature storage B is also provided. The boundary between the low-temperature storage B and the cold-source snow / ice storage chamber has good heat conductivity, so that the temperature range approximates the cold-source room. In the space above the low-temperature storage ceiling F and the load room ceiling G of the facility, a secondary heat exchanger 4 and a short-circuit air control valve 3, a supply / exhaust air supply unit 5, an outside air introduction air path 8, and an external exhaust, which are air quality adjustment units. The air path 9 is placed to form the facility model. Next, the operation status of the facility system is described.
In the most normal operation, the air cooled by the stored snow and ice E, which is stored in the cold source snow and ice storage chamber A, is sucked in from the cold air supply / intake air passage 2 by the operation of the air supply / exhaust air blower 5 and the short-circuit wind Passes through the secondary heat exchanger 4 through the regulating valve 3,
The air is supplied to the load chamber C from the cool air supply air passage 6 by the supply / exhaust air blower 5. The regression air that has absorbed heat in the load chamber is taken in from the load airflow suction airflow path 7, passes through the supply / exhaust airflow section 5, passes through the heat exchanger 4, passes through the short-circuit airflow path valve 3, and passes through the load airflow discharge airflow path 1. It is returned to the cold-ice snow / ice storage chamber A. In this circulation operation, the direct contact between the circulating wind and the cold source thunder ice performed in the cold source snow ice storage chamber A, and the cold wind due to the primary heat exchange is ice temperature and humid, but by passing through the secondary heat exchanger. By performing heat exchange with the regression wind having a heat load, the temperature is adjusted to an appropriate temperature and an appropriate humidity, and is sent to the load chamber C. The supply of the temperature-controlled and humidified air alleviates the low-temperature shock of the load body and provides an appropriate environment. When the required air conditioning does not require this full circulation operation, a part of the load return air is short-circuited to the cool air suction air passage by operating the short-circuit air adjustment valve 3, thereby saving the primary heat exchange. To reduce the consumption of cold sources. In addition, the combined use of the outside air introduction air passage 8 and the outside exhaust air passage 9 makes it possible to perform more precise air adjustment and to operate the cold source snow and ice more economically.

[0005]

As a result, the temperature of the ice-cold air is raised to an intermediate temperature with the load room temperature, and the relative humidity is reduced. On the other hand, the return air from the load chamber becomes low-temperature air by heat exchange with the supplied cool air, and is introduced into the cold heat source chamber. The recurrent wind introduced into the cold-source snow / ice storage chamber is cooled down by the secondary heat exchange, so that the consumption of the cold-source snow / ice is extended. Also, the air supply to the load quality can be set to any air conditioning depending on the degree of the secondary heat exchange.

[0006]

The wind path configuration by the secondary heat exchange system realizes simplification of the system in small-scale snow and ice air conditioning and more efficient consumption of the stored snow and ice, so that the economic efficiency is further improved. It becomes. In addition, since the temperature and humidity of the temperament can be adjusted, the cooling shock can be avoided. In addition, the boundary between the low temperature storage B and the cold source snow and ice storage room has good heat conductivity,
Since the temperature range is similar to that of the cold source room, it becomes highly convenient as a humidity-compensated refrigerator for storing agricultural products and general food products.

[Brief description of the drawings]

Fig. 1 Snow and ice air conditioning system with secondary heat exchange function
Arbitrary cross section of model

FIG. 2 is a perspective view of a secondary heat exchange air quality adjusting portion.

FIG. 3 is a functional line diagram of a secondary heat exchange air quality adjusting portion.

[Explanation of symbols]

 A Cold and cold source snow and ice storage room B Low temperature storage C Load room D Front room E Storage snow and ice F Low temperature storage ceiling G Load room ceiling H Blower 1 Next heat exchanger 5, Air supply / exhaust air blower 6, Cool air supply air path 7, Load air suction air path 8, External air introduction air path 9, External exhaust air path

Claims (1)

[Claims] 1. A cooling system using a snow-ice cold heat source, wherein air cooled in a cold-ice room in which snow and ice are stored is supplied to a load room, heated in the load room, and returned to the cold-source room. By exchanging heat between the specific temperature of the supplied air and the return air,
Aiming for proper conditioning of the air supplied to the load chamber, it can be taken into the cold source room at a low temperature due to the temperature drop of the return air.
Snow and ice air conditioning system with secondary heat exchange function