Adsorption heat pump system and method of generating cooling power

Patent metadata

Field	Value
Publication number	US-9863673-B2
Application number	US-201313972289-A
Country	US
Kind code	B2
Filing date	Aug 21, 2013
Priority date	Aug 22, 2012
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A heat pump including an evaporator and an adsorber is provided. The adsorber is regenerated by applying heat from a chemical thermal storage reactor, a heat accumulator or an external heat source, at a temperature higher than or equal to a temperature to regenerate the adsorber.

First claim

What is claimed is:

1. An adsorption heat pump system comprising:
a condenser that condenses a heat medium;
an evaporator that evaporates the heat medium;
an adsorber that is connected with the evaporator and adsorbs the heat medium, and is regenerated by receiving thermal energy at a temperature higher than or equal to a regeneration temperature for evaporating the heat medium;
a heat accumulator that is a chemical thermal storage reactor connected to the evaporator; and
a controller programmed to:
simultaneously connect: (i) the heat accumulator to the evaporator, and (ii) the adsorber to the condenser, such that pressure in the heat accumulator is reduced to cause evaporation of the heat medium in the evaporator,
to generate reaction heat in the heat accumulator in an amount more than or equal to that of the latent heat of evaporation of the heat medium by reacting with the heat medium from the evaporator, and
to release the reaction heat from the heat accumulator to the adsorber at a temperature higher than or equal to the regeneration temperature to regenerate the adsorber.

2. The adsorption heat pump system according to claim 1 , comprising a plurality of the heat accumulators.

3. The adsorption heat pump system according to claim 2 , wherein when some of the plurality of the chemical thermal storage reactors absorb heat, other of the chemical thermal storage reactors are able to release heat.

4. A method of generating cooling power by using the adsorption heat pump system of claim 1 , the method comprising:
generating cooling power by evaporation of the heat medium resulting from an effect of pressure reduction by the chemical thermal storage reactor through simultaneously connecting: (i) the heat accumulator to the evaporator, and (ii) the adsorber to the condenser;
generating cooling power by evaporation of the heat medium resulting from an effect of pressure reduction by the adsorber;
storing thermal energy in the chemical thermal storage reactor by generating reaction heat that is in an amount more than or equal to that of the latent heat of evaporation of the heat medium by reacting a heat storage material in the chemical thermal storage reactor with the heat medium from the evaporator; and
regenerating the adsorber by applying thermal energy stored in the chemical thermal storage reactor to the adsorber to desorb the adsorbed heat medium.

Assignees

• Toyota Chuo Kenkyusho Kk

Inventors

• Hirota Yasuki
• Shimazu Takashi
• Yamauchi Takafumi
• Wakasugi Tomohisa
• Iwata Ryuichi

Classifications

• Y02B30/52

  Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency · CPC title

• F25B49/046

  Operating intermittently · CPC title

• F25B17/08

  the absorbent or adsorbent being a solid, e.g. salt (F25B17/12 takes precedence) · CPC title

• Y02A30/27

  Relating to heating, ventilation or air conditioning [HVAC] technologies · CPC title

• F25B30/04 Primary

  of the sorption type · CPC title