Heat supply system and heat supply method

A heating system and heat medium technology, applied in heating systems, hot water central heating systems, heating methods, etc., can solve the problems of existing technologies that cannot be used and lost, and achieve excellent economy, low cost, The effect of thermal efficiency improvement

Inactive Publication Date: 2009-12-02
苏庆泉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Visible, tap water has a large amount of thermal energy, but existing technology can't be utilized, causes loss in vain, is really a pity

Method used

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Examples

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example 1

[0046] Using the method of embodiment 4 to provide hot water, the ratio of the average flow of cold water to the average flow of hot water used by users is more than 12. The temperature of ambient air is 12°C, the temperature of tap water is 15°C, the temperature of hot water supplied from the top heat medium outlet is 50-55°C, with an average temperature of 52°C, and the average temperature of cold water supplied from the bottom heat medium outlet is 12°C . The average evaporation temperature of the first vapor compression heat pump cycle in this example is 7°C, the average condensation temperature is 40°C, the average evaporation temperature of the second vapor compression heat pump cycle is 30°C, and the average condensation temperature is 57°C. It is R22, the adiabatic efficiency of the compressor is 0.85, the comprehensive heat pump cycle COP of this example is 4.15, and the primary energy utilization efficiency is 137%.

example 2

[0048]Using the method of Embodiment 5 to provide hot water, the ratio of the average flow of cold water to the average flow of hot water used by users is more than 1. The ambient air temperature is 32°C, the temperature of the circulating working fluid of the condenser of the external refrigeration air conditioner is 40°C, the temperature of the tap water is 25°C, the temperature of the hot water provided from the top heat medium outlet is 50-55°C, and the average temperature is 52°C. The average temperature of the cool water supplied from the bottom heat medium outlet is 20°C. The average evaporation temperature of the first vapor compression heat pump cycle in this example is 15°C, the average condensation temperature is 40°C, the average evaporation temperature of the second vapor compression heat pump cycle is 30°C, and the average condensation temperature is 57°C. It is R22, the adiabatic efficiency of the compressor is 0.85, the comprehensive heat pump cycle COP of this...

example 3

[0050] Using the method of Embodiment 6 to provide hot water, the ratio of the average flow rate of cold water to the average flow rate of hot water used by users is more than 3. The ambient air temperature is 20°C, the temperature of tap water is 15°C, the temperature of hot water supplied from the top heat medium outlet is 53-58°C, with an average temperature of 55°C, and the average temperature of cold water supplied from the bottom heat medium outlet is 12°C . The heat storage agent of the first heat storage body adopts disodium hydrogen phosphate hydrate (Na 2 HPO 4 12H 2 O), the heat storage agent of the second heat storage body adopts sodium acetate hydrate (NaCH 3 COO·3H 2 O). The average evaporation temperature of the first vapor compression heat pump cycle in this example is 12°C, the average condensation temperature is 41°C, the average evaporation temperature of the second vapor compression heat pump cycle is 31°C, and the average condensation temperature is 6...

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Abstract

The invention relates to a heat supply system and a heat supply method. The heat supply system comprises a compressor, a first throttling valve, a second throttling valve, a first valve, a second valve, a third valve, a fourth valve, a heat medium container, an upper heat exchanger, a middle heat exchanger and a lower heat exchanger; wherein the upper heat exchanger, the middle heat exchanger and the lower heat exchanger are arranged in the heat medium container from top to bottom; and the heat medium container is used for containing a heat medium, the middle lower part of the heat medium container is provided with a heat medium inlet, and the top and the bottom of the heat medium container are respectively provided with a heat medium outlet. The heat supply system can adopt tap water, heat discharged by a refrigeration air-conditioner and ambient air as heat sources to enable the energy of the tap water, the heat discharged by the refrigeration air-conditioner and the ambient air to be effectively utilized, and enable the heat supply coefficient of a vapor compression type heat pump cycle, i.e. the heat efficiency of the heat supply system to be obviously enhanced by combining the effective utilization of valley electric power. The heat supply system also has the characteristics of steady temperature of the provided heat medium or hot water and scaling resistance of a heat-transfer surface, thereby being more suitable for practical use.

Description

technical field [0001] The invention relates to a heat supply system and a heat supply method in the field of thermal energy engineering, in particular to a heat supply system and a heat supply method including a vapor compression heat pump cycle. Background technique [0002] In the urban water supply system, the water that has been treated by the water plant and reaches the standard is usually sent to the water use unit through the water supply pipeline, such as a living quarter, a water use factory or a water garden unit, etc. Reach each household or other water terminals. In the above-mentioned water supply system, the temperature of the tap water sent to the water terminal is usually above 10 degrees Celsius. As far as general water consumption is concerned, in most cases, users are not sensitive to the temperature of tap water. For example, in winter and summer, the temperature of tap water may differ by 20 degrees Celsius, but this does not affect the normal use of u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D3/18F24D19/10F25B30/02F28D20/00
CPCY02B30/12Y02E70/30Y02E60/142Y02E60/14
Inventor 苏庆泉
Owner 苏庆泉
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