Hybrid solar heat absorption cooling system

Patent metadata

Field	Value
Publication number	US-10337772-B2
Application number	US-201415304845-A
Country	US
Kind code	B2
Filing date	Nov 26, 2014
Priority date	Sep 4, 2014
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

Provided is an hybrid solar heat absorption cooling system comprising: an absorption refrigerator; a solar heat steam generator configured to generate steam using solar heat; a daytime steam supplying unit configured to supply steam generated by the solar heat steam generator during the day as a heat source for the absorption refrigerator; a daytime hot water storage tank configured to store hot water discharged from the absorption refrigerator during the day; a nighttime hot water supplying unit configured to supply hot water stored in the daytime hot water storage tank during the night as a heat source for the absorption refrigerator; a nighttime hot water storage tank configured to store hot water discharged from the absorption refrigerator during the night; and a daytime hot water supplying unit configured to supply hot water stored in the nighttime hot water storage tank during the day to the solar heat steam generator.

First claim

The invention claimed is:

1. A hybrid solar heat absorption cooling system comprising:
an absorption refrigerator;
a solar heat steam generator comprising a concentration solar collector configured to collect solar heat and to generate wet steam and a steam drum configured to separate the wet steam generated by the concentration solar collector into dry steam and heated water;
a daytime steam supplying unit comprising a daytime steam supplying flow path that connects the steam drum and the absorption refrigerator, the daytime steam supply unit configured to supply the dry steam generated by the solar heat steam generator during the day as a heat source for the absorption refrigerator;
a daytime hot water storage tank configured to store the heated water discharged from the absorption refrigerator during the day;
a nighttime hot water supplying flow path that connects the daytime hot water storage tank and the absorption refrigerator to guide the heated water in the daytime hot water storage tank to the absorption refrigerator during the night;
a nighttime hot water pump installed on the nighttime hot water supplying flow path and operating during the night;
a nighttime hot water storage tank configured to store the heated water discharged from the absorption refrigerator during the night;
a daytime hot water supplying flow path that connects the nighttime hot water storage tank and the solar heat steam generator to guide the hot water in the nighttime hot water storage tank to the solar heat steam generator during the day;
a daytime pressing hot water pump installed on the daytime hot water supplying flow path and operating during the day;
a temperature sensor installed in the daytime hot water storage tank; and
a bypass flow path that bypasses at least part of the heated water separated from the steam drum to the daytime hot water storage tank when the temperature detected by the temperature sensor is less than a predetermined set temperature.

2. A hybrid solar heat absorption cooling system comprising:
an absorption refrigerator;
a solar heat steam generator comprising:
a concentration solar collector configured to generate steam using solar heat;
a preheater configured to primarily preheat heated water supplied from a nighttime hot water storage tank by collecting solar heat during the day;
a heater configured to secondarily heat the heated water discharged from the preheater and to evaporate the heated water; and
a steam drum configured to separate wet steam generated by the heater into dry steam and heated water, to supply the dry steam to a daytime steam supplying unit, and to allow the heated water to be circulated into the heater;

the daytime steam supplying unit comprising a daytime steam supplying flow path that connects the steam drum and the absorption refrigerator, the daytime steam supply unit configured to supply steam generated by the solar heat steam generator during the day as a heat source for the absorption refrigerator;
a daytime hot water storage tank configured to store the heated water discharged from the absorption refrigerator during the day;
a nighttime hot water supplying unit comprising a nighttime hot water supplying flow path and a nighttime hot water pump, the nighttime hot water supplying unit configured to supply the heated water stored in the daytime hot water storage tank during the night as a heat source for the absorption refrigerator;
the nighttime hot water storage tank configured to store the heated water discharged from the absorption refrigerator during the night;
a daytime hot water supplying unit comprising a daytime hot water supply flow path and a daytime pressing hot water pump, the daytime hot water supplying unit configured to supply the heated water stored in the nighttime hot water storage tank during the day to the solar heat steam generator;
a temperature sensor installed in the daytime hot water storage tank; and
a bypass flow path that bypasses at least part of the heated water separated from the steam drum to the daytime hot water storage tank when a temperature detected by the temperature sensor is less than a predetermined set temperature.

3. The hybrid solar heat absorption cooling system of claim 1 , wherein the solar heat steam generator further comprises a hot water circulation flow path that circulates the heated water separated from the steam drum into an inlet of the heater.

4. The hybrid solar heat absorption cooling system of claim 1 , further comprising a bypass valve configured to open/close the bypass flow path.

5. The hybrid solar heat absorption cooling system of claim 1 , wherein at least one of the preheater and the heater uses the concentration solar collector.

6. The hybrid solar heat absorption cooling system of claim 1 ,
wherein the nighttime hot water supplying flow path connects the daytime hot water storage tank and the absorption refrigerator to guide the heated water in the daytime hot water storage tank to the absorption refrigerator during the night,
wherein the nighttime hot water pump is installed on the nighttime hot water supplying flow path and operated during the night.

7. The hybrid solar heat absorption cooling system of claim 1 ,
wherein the daytime hot water supplying flow path connects the nighttime hot water storage tank and the solar heat steam generator to guide the heated water in the nighttime hot water storage tank to the solar heat steam generator during the day,
wherein the daytime pressing hot water pump is installed on the daytime hot water supplying flow path and operated during the day.

8. The hybrid solar heat absorption cooling system of claim 1 , further comprising
an auxiliary heater configured to heat the heated water stored in the daytime hot water storage tank when a temperature detected by the temperature sensor is less than the predetermined set temperature.

Assignees

• Korea Inst Energy Res

Inventors

• Kim Jong Kyu
• Kang Yong Heack
• Lee Hyun Jin
• Lee Sang Nam

Classifications

• F24S20/30

  Solar heat collectors for heating objects, e.g. solar cookers or solar furnaces · CPC title

• F25B15/00 Primary

  Sorption machines, plants or systems, operating continuously, e.g. absorption type · CPC title

• F24D3/00 Primary

  Hot-water central heating systems (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00) · CPC title

• Y02A30/272

  Solar heating or cooling · CPC title

• F25B2400/24

  Thermal storage element · CPC title