You need JavaScript to view this

Lithium bromide high-temperature absorption heat pump: coefficient of performance and exergetic efficiency

Abstract

A theoretical study of a lithium bromide absorption heat pump, used as a machine type I and aimed to produce heat at 120{sup 0}C via waste heat sources at 60{sup 0}C, is given. Real performance conditions are stated for each component of the machine. By means of thermodynamic diagrams (p, t, x) and (h, x), the required data are obtained for calculation of the heat recovered in the evaporator Q{sub e}, the heat delivered to the absorber Q{sub a} and to the condenser Q{sub c}, and the heat supplied to the generator Q{sub g}. The heat delivered by the hot solution to the cold solution in the heat recovered Q{sub r}, and the work W{sub p} done by the solution pump are calculated. The probable COP is calculated as close to 1.4 and the working temperature in the generator ranges from 178 to 200{sup 0}C. The heat produced by the heat pump is 22% cheaper than that obtained from a cogeneration system comprising a natural gas internal combustion engine and high temperature heat pump with mechanical compression. Compared with a high temperature heat pump with mechanical compression, the heat produced by the absorption heat pump is 31% cheaper. From (h,  More>>
Authors:
Izquierdo, M; [1]  Aroca, S [2] 
  1. Consejo Superior de Investigaciones Cientificas, Madrid (ES). Inst. de Optica
  2. Escuela Tecnica Superior de Ingenieros Industriales, Valladolid (ES). Catedratico de Ingenieria Termica
Publication Date:
Apr 01, 1990
Product Type:
Journal Article
Reference Number:
GB-90-000902; EDB-90-109307
Resource Relation:
Journal Name: International Journal of Energy Research; (UK); Journal Volume: 14:3
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; HEAT PUMPS; LITHIUM BROMIDES; COEFFICIENT OF PERFORMANCE; EFFICIENCY; EXERGY; HEAT RECOVERY; MATHEMATICAL MODELS; THERMODYNAMICS; WASTE HEAT UTILIZATION; ALKALI METAL COMPOUNDS; BROMIDES; BROMINE COMPOUNDS; ENERGY; ENERGY RECOVERY; HALIDES; HALOGEN COMPOUNDS; LITHIUM COMPOUNDS; LITHIUM HALIDES; RECOVERY; WASTE PRODUCT UTILIZATION; 320304* - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization
OSTI ID:
7064148
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0363-907X; CODEN: IJERD
Submitting Site:
GB
Size:
Pages: 281-291
Announcement Date:
Aug 01, 1990

Citation Formats

Izquierdo, M, and Aroca, S. Lithium bromide high-temperature absorption heat pump: coefficient of performance and exergetic efficiency. United Kingdom: N. p., 1990. Web. doi:10.1002/er.4440140304.
Izquierdo, M, & Aroca, S. Lithium bromide high-temperature absorption heat pump: coefficient of performance and exergetic efficiency. United Kingdom. doi:10.1002/er.4440140304.
Izquierdo, M, and Aroca, S. 1990. "Lithium bromide high-temperature absorption heat pump: coefficient of performance and exergetic efficiency." United Kingdom. doi:10.1002/er.4440140304. https://www.osti.gov/servlets/purl/10.1002/er.4440140304.
@misc{etde_7064148,
title = {Lithium bromide high-temperature absorption heat pump: coefficient of performance and exergetic efficiency}
author = {Izquierdo, M, and Aroca, S}
abstractNote = {A theoretical study of a lithium bromide absorption heat pump, used as a machine type I and aimed to produce heat at 120{sup 0}C via waste heat sources at 60{sup 0}C, is given. Real performance conditions are stated for each component of the machine. By means of thermodynamic diagrams (p, t, x) and (h, x), the required data are obtained for calculation of the heat recovered in the evaporator Q{sub e}, the heat delivered to the absorber Q{sub a} and to the condenser Q{sub c}, and the heat supplied to the generator Q{sub g}. The heat delivered by the hot solution to the cold solution in the heat recovered Q{sub r}, and the work W{sub p} done by the solution pump are calculated. The probable COP is calculated as close to 1.4 and the working temperature in the generator ranges from 178 to 200{sup 0}C. The heat produced by the heat pump is 22% cheaper than that obtained from a cogeneration system comprising a natural gas internal combustion engine and high temperature heat pump with mechanical compression. Compared with a high temperature heat pump with mechanical compression, the heat produced by the absorption heat pump is 31% cheaper. From (h, x) and (s, x) diagrams, exergy losses for each component can be determined leading to an exergetic efficiency of 75% which provides the quality index of the absorption cycle. (author).}
doi = {10.1002/er.4440140304}
journal = {International Journal of Energy Research; (UK)}
volume = {14:3}
journal type = {AC}
place = {United Kingdom}
year = {1990}
month = {Apr}
}