Waste heat powered air conditioning in a diesel total energy system

1992 ◽  
Vol 27 (5) ◽  
pp. 273-279 ◽  
Author(s):  
S. E. Aly
Keyword(s):  
Total Energy ◽  
Air Conditioning ◽  
Waste Heat ◽  
Energy System

scholarly journals The Regenerative Gas Turbine in the Total-Energy Picture

1964 ◽  
Author(s):  
W. Stewart Roberts
Keyword(s):  
Total Energy ◽  
Electric Power ◽  
Gas Turbine ◽  
Air Conditioning ◽  
Energy System ◽  
Office Building ◽  
Conditioning Performance ◽  
Actual Operating

An illustration is given of the considerations necessary in the application of a regenerative gas turbine to a total-energy system involving electric power, heating and air conditioning. Performance of the turbine is compared to a nonregenerative type. Requirements of a modern downtown office building based upon actual operating records for the year 1962 are matched against the turbine’s capabilities for supplying the system.

scholarly journals Residential Total Energy System Testing at the Canadian Centre for Housing Technology

2007 ◽  
Author(s):  
L. Yang ◽  
M. A. Douglas ◽  
J. Gusdorf ◽  
F. Szadkowski ◽  
E. Limouse ◽  
...  
Keyword(s):  
Total Energy ◽  
Waste Heat ◽  
National Research Council ◽  
Energy System ◽  
Heat Pumps ◽  
Hot Water ◽  
Water Tank ◽  
Pump System ◽  
Ground Source Heat Pumps ◽  
Water Storage Tank

This paper outlines a demonstration project planned and implemented at the Canadian Centre for Housing Technology (CCHT) in 2006. The CCHT, located on the campus of the National Research Council (NRC) in Ottawa, Ontario, Canada maintains two identical, detached, single-family houses that have the capacity to assess energy and building technologies in side by side comparisons with daily simulated occupancy effects. The paper describes the residential integrated total energy system being installed in one of the homes at the CCHT for this demonstration, consisting of two one-ton ground source heat pumps, an air handler with supplemental/back-up hydronic heating capability, a natural gas fired storage type water tank, an indirect domestic hot water storage tank and a multistage thermostat capable of controlling the system. There is also a description of the bore-field, consisting of three vertical wells arranged to suit a typical suburban landscape. Two of the wells serve the heat pumps; the third well is arranged between the other two to sink the waste heat from a cogeneration unit. The 6 kWe cogeneration unit to be installed in May 2007 is also described. The heat pump system was deliberately sized to satisfy the cooling load in Canada’s heat dominated climate, leaving room in the operation of the system to accept waste heat from the cogeneration unit, either directly or indirectly through recycling the heat through the ground to the heat pumps. This paper presents and discusses preliminary testing results during the fall of 2006 and modeling work of the ground heat exchanger component of the system and therefore sets the stage for performance modeling work that is currently underway at Natural Resources Canada (NRCan).

Utilization of Low Temperature Waste Heat for Cold TES

2002 ◽  
Author(s):  
James J. Rizza
Keyword(s):  
Low Temperature ◽  
Air Conditioning ◽  
Waste Heat ◽  
Water Solution ◽  
Lithium Bromide ◽  
Thermal Storage ◽  
Energy System ◽  
Storage Material ◽  
Ideal System ◽  
Temporal Variance

This paper presents an advanced energy cogeneration system that utilizes low temperature waste heat in the range of 60°C to 95°C to produce cold thermal energy storage (TES). Since there is usually a temporal variance between the availability of low temperature waste heat and demand for commercial building air conditioning, a cold TES system is incorporated into this advance energy system. The proposed TES system uses a lithium bromide/water solution both as a refrigerant and as a cold thermal storage material. The cold storage material can be stored at ambient temperature without thermal insulation for an indefinite period of time without losing its charge, making it an ideal system for utilizing peaking system’s low temperature waste heat or to utilize low temperature waste heat during nocturnal operation of continuous generation systems at a time when there are usually low or minimal air conditioning requirements. The heat pump and waste heat is used to recover the thermal storage by reprocessing the stored lithium bromide weak solution to a higher concentration.

Analysis on the Waste Heat Utilization of Lower Temperature of Steelworks Based on the Theory of Total Energy System

2014 ◽  
Vol 900 ◽  
pp. 805-809
Author(s):  
Ming Rong Han ◽  
Long Qiang Huang ◽  
Jian Guo Yin
Keyword(s):  
Total Energy ◽  
Waste Heat ◽  
Energy System ◽  
Main Process ◽  
Gas Recovery ◽  
Heat Utilization ◽  
Working Medium ◽  
Generating Capacity ◽  
Waste Heat Utilization ◽  
Lower Temperature

Taking the waste heat utilization of sintering circular cooler in Chongqing Iron & Steel Co.,Ltd as an example, the problems of the system have been analyzed and some measures have been presented based on the theory of total energy system in this paper. The result shows the main reasons that the generated energy can only reach the design value of 60% are lower energy grade because of oversintering or undersintering of sinter, the air leakage of waste gas recovery system of sintering circular cooler, frequent short interruption of sinter flow and so on. Some measures which can improve the energy grade of waste heat of sintering circular cooler and increase the generating capacity have been proposed. These measures involve controlling the end point of sintering, improving the operation level of main process, improving sealing technology of the system, recycling the heat of the boiler outlet flue gas, cascading utilization of the heat of third section of the sintering circular cooler, valuing the conversion and utilization between the various forms of energy, such as work, heat, the internal energy of working medium.

Analysis of Heat Pipe Heat Exchanger (HPHE) For Waste Heat Recovery from an Air Conditioning System

2007 ◽  
Vol 2 (3) ◽  
pp. 86-95
Author(s):  
R. Sudhakaran ◽  
◽  
V. Sella Durai ◽  
T. Kannan ◽  
P.S. Sivasakthievel ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Heat Pipe ◽  
Air Conditioning ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Air Conditioning System ◽  
Pipe Heat

Evaluation of Energy Efficiency for a CCHP System With Available Microturbine

2007 ◽  
Author(s):  
H. X. Liang ◽  
Q. W. Wang
Keyword(s):  
Gas Turbine ◽  
Waste Heat ◽  
Energy System ◽  
Primary Energy ◽  
Economic Benefits ◽  
Optimal Operation ◽  
Energy Utilization ◽  
Utilization Efficiency ◽  
Energetic Efficiency ◽  
Efficiency Evaluation

This paper deals with the problem of energy utilization efficiency evaluation of a microturbine system for Combined Cooling, Heating and Power production (CCHP). The CCHP system integrates power generation, cooling and heating, which is a type of total energy system on the basis of energy cascade utilization principle, and has a large potential of energy saving and economical efficiency. A typical CCHP system has several options to fulfill energy requirements of its application, the electrical energy can be produced by a gas turbine, the heat can be generated by the waste heat of a gas turbine, and the cooling load can be satisfied by an absorption chiller driven by the waste heat of a gas turbine. The energy problem of the CCHP system is so large and complex that the existing engineering cannot provide satisfactory solutions. The decisive values for energetic efficiency evaluation of such systems are the primary energy generation cost. In this paper, in order to reveal internal essence of CCHP, we have analyzed typical CCHP systems and compared them with individual systems. The optimal operation of this system is dependent upon load conditions to be satisfied. The results indicate that CCHP brings 38.7 percent decrease in energy consumption comparing with the individual systems. A CCHP system saves fuel resources and has the assurance of economic benefits. Moreover, two basic CCHP models are presented for determining the optimum energy combination for the CCHP system with 100kW microturbine, and the more practical performances of various units are introduced, then Primary Energy Ratio (PER) and exergy efficiency (α) of various types and sizes systems are analyzed. Through exergy comparison performed for two kinds of CCHP systems, we have identified the essential principle for high performance of the CCHP system, and consequently pointed out the promising features for further development.

Energy Consumption Analysis of Ship Energy System

2014 ◽  
Vol 962-965 ◽  
pp. 1836-1839
Author(s):  
Yong Ren ◽  
Zhen Ying Mu ◽  
Hong Tao Zheng ◽  
Shi Chen
Keyword(s):  
Energy Consumption ◽  
Recovery Rate ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Energy System ◽  
Loss Ratio ◽  
Energy Consumption Analysis ◽  
Performance Indexes ◽  
Analysis Models

Energy consumption analysis models of ship energy system were established. The performance indexes, such as energy loss ratio, waste heat recovery rate and waste heat recovery perfect degree were defined. A 70000 - ton crude oil carrier was taken as an example for energy consumption analysis. The results show that the waste heat recovery rate of exhaust smoke was 15.69%, and the waste heat recovery perfect degree was 52.76%.

scholarly journals Feasibility Study of Solar Adsorption Technologies for Automobile Air-Conditioning

Solar Energy ◽  
2005 ◽  
Author(s):  
M. O. Abdullah ◽  
S. L. Leo
Keyword(s):  
Feasibility Study ◽  
Ozone Depletion ◽  
Air Conditioning ◽  
Waste Heat ◽  
Environmentally Benign ◽  
Adsorption System ◽  
Adsorption Refrigeration ◽  
Adsorption Technology ◽  
Cooling Loads ◽  
Automobile Air Conditioning

An adsorption system driven by solar heat or waste heat can help to eliminate the use of ozone depletion substances, such as chlorofluorocarbons (CFCs) and hydro-chlorofluorocarbons (HCFCs). In recent years, adsorption system has witnessed an increasing interest in many fields due to the fact that this system is quiet, long lasting, cheap to maintain and environmentally benign. Although adsorption system is not commonly used for automobile air conditioning, adsorption-cooled mini-refrigerators have been marketed for recreational transports (motor homes, boats, etc). Hence, there exists a need for a creative design and innovation to allow adsorption technology to be practical for air conditioning in automobile. The objective of this paper is to present a comprehensive review on the past efforts in the field of solar adsorption refrigeration systems and also the feasibility study of this technology for automobile airconditioning purpose. It is a particularly an attractive application for solar energy because of the near coincidence of peak cooling loads with the available of solar power.

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