Selection method of heat medium using side heat exchanger during construction of air-conditioning system
An air-conditioning system and heat exchanger technology, applied in air-conditioning systems, heating methods, household heating and other directions, can solve problems such as inability to make clear judgments
Active Publication Date: 2016-08-31
MITSUBISHI ELECTRIC CORP
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Problems solved by technology
[0006] However, in the above-mentioned system in which the air conditioner using the refrigerant, water, or brine is mixed, it cannot be clearly determined which space the air conditioner using the refrigerant, water, or brine is used for.
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Embodiment approach 1
[0034] like figure 1 As shown, the air conditioner 100 of this embodiment has: one outdoor unit 1 as a heat source machine; a plurality of indoor units 2; a heat medium converter 3 between the outdoor unit 1 and the indoor unit 2; a plurality of indoor units 71; and a repeater 70 between the outdoor unit 1 and the indoor unit 71. The heat medium relay unit 3 performs heat exchange using the heat source side refrigerant and the heat medium. The outdoor unit 1 and the heat medium relay unit 3 are connected by a refrigerant pipe 4 for circulating a heat source side refrigerant. The heat medium relay unit 3 and the indoor unit 2 are connected by a pipe (heat medium pipe) 5 for circulating the heat medium. In addition, cooling energy or heating energy generated by the outdoor unit 1 is delivered to the indoor unit 2 via the heat medium relay unit 3 . In addition, the refrigerant passing through the relay unit 70 is directly delivered to the indoor unit 71 .
[0035] The air-con...
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The present invention relates to a method for selecting a heat medium of a utilization-side heat exchanger during construction of an air-conditioning system, which includes: a first step of determining the necessary capacity of utilization-side heat exchangers corresponding to a plurality of air-conditioning spaces; a second step of determining Calculate the total amount of refrigerant necessary to circulate the refrigerant in all the utilization-side heat exchangers with the determined capacity; the third step is to calculate the total amount of refrigerant for each air-conditioning space in each of the utilization-side heat exchangers. The refrigerant concentration at the time of leakage in the air-conditioned space; the fourth step, which determines whether the refrigerant concentration in each air-conditioned space exceeds a predetermined limit concentration; the fifth step, which exists in the fourth step in the case of an air-conditioned space exceeding the limit concentration , selecting the circulating heat medium of the utilization-side heat exchanger set in any one of the air-conditioned spaces as a non-toxic medium; and the sixth step, calculating the use-side heat exchanger other than the utilization-side heat exchanger selected as the non-toxic medium The total amount of refrigerant necessary to circulate the refrigerant in all the utilization-side heat exchangers is used as the total amount of refrigerant in the third step.
Description
technical field [0001] The present invention relates to an air conditioning apparatus applied to, for example, a multi-unit air conditioner for buildings. Background technique [0002] In an air conditioner, a heat source unit (outdoor unit) is arranged outside a building and an indoor unit is arranged inside a building, such as a multi-unit air conditioner for a building. The refrigerant circulating in the refrigerant circuit of such an air-conditioning apparatus radiates heat (absorbs heat) to the air supplied to the heat exchanger of the indoor unit, and heats or cools the air. Then, the heated or cooled air is sent into the air-conditioned space to be heated or cooled. [0003] As a rule, buildings have a plurality of indoor spaces, so such an air-conditioning system accordingly also consists of a plurality of indoor units. In addition, when the scale of the building is large, the refrigerant piping connecting the outdoor unit and the indoor unit may reach 100 m. When...
Claims
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IPC IPC(8): F24F11/02F25B1/00
CPCF25D17/02F25B45/00F25B13/00F25B25/005F25B2313/003F25B2339/047F25B2500/19F25B49/005F24F3/065F25B2313/0231F24F11/30F24F11/62F24F11/36F24F11/84F28F27/02
Inventor 岛本大祐森本修本多孝好东幸志西冈浩二
Owner MITSUBISHI ELECTRIC CORP