Waste Heat Recovery and Utilization in Cotton Manufacturing Enterprise: Energy Saving and Emission Reduction Aspects of a Case Study

2011 ◽  
Vol 347-353 ◽  
pp. 1425-1430 ◽  
Author(s):  
Min Zhu ◽  
Fan Long Kong ◽  
Yue Li ◽  
Nan Wang ◽  
Min Xi ◽  
...  
Keyword(s):  
Energy Saving ◽  
Emission Reduction ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Environmental Benefits ◽  
Manufacturing Enterprise ◽  
Accurate Analysis ◽  
The Status ◽  
Original Production

In this paper, a detailed description of a project designed to recovery and utilize waste heat in a cotton manufacturing enterprise in Shandong, Jin Mao Textile Co., Ltd(China) is presented: both energy saving and emission reduction(ESER) aspects have been thoroughly considered. First of all, an accurate analysis of the status of the previous cotton mill for production process was developed, to identify possible improvement opportunities; then an energy saving reformation of waste heat recovery in cotton mill was proposed and designed. After that, by means of a comprehensive feasibility analysis, the ESER indices were calculated assuring good environmental benefits of the plant modification investment. The modifications to the system make it possible to achieve consistent annual savings of coal, electricity and waste heat, CO2, SO2 emissions through effective recovery and utilization of the waste heat that was discharged into the atmosphere in the original production. Implementation of the reformation system fulfilled the waste heat recovery and utilization. And also create good environmental benefits.

Recovery of waste heat process through the various thermodynamic cycles: A critical review

2020 ◽  
pp. 175-182
Author(s):  
Harwinder Singh ◽  
R.S. Mishra ◽  
Amit Pal ◽  
Amrik Singh
Keyword(s):  
Energy Saving ◽  
Thermal Performance ◽  
Critical Review ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Short Description ◽  
Heat Process ◽  
Thermodynamic Cycles ◽  
Review Study

This review study aimed at short description on most recent research available with regards to waste heat recovery (WHR) area which could be obtained with the help of various power as well as refrigeration cycles. From the literature, it is understood that WHR not only help us to reduce emission effects but even useful in energy saving that can further positively effect to the thermal performance or can be used for different purposes with the help of WHR cycles. Therefore, present study mainly discusses the literature with regard to application of various thermodynamic cycles widely employed these days for the WHR processes.

Practice of Energy-Saving Renovation on Tunnel Kiln for Silica Brick by New Mode

2014 ◽  
Vol 953-954 ◽  
pp. 830-833
Author(s):  
Shun Li ◽  
Gong Duo Zhang ◽  
Xiao Tang Li ◽  
Yong Hui ◽  
Guo Wei Xie
Keyword(s):  
Energy Saving ◽  
Tunnel Kiln ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Energy Utilization ◽  
Saving Rate ◽  
Sintering Process ◽  
Main Factors ◽  
Saving Mode

Tunnel kiln was reformed according to energy-saving mode, which was energy utilization diagnosis and analysis and energy-saving reconstruction. First, thermal performance was diagnosed, and the basic data for energy-saving reconstruction was provided through the test of tunnel kiln. Then the main factors of low thermal efficiency was found .Second the thermal balance was calculated in drying and sintering process, which determined the form of waste heat recovery and utilization system. Finally the reconstruction was implemented by three energy-saving technologies .It caused energy-saving rate reached 44%.

Waste-Heat Recovery in Batch Processs Using Heat Storage

1995 ◽  
Vol 117 (2) ◽  
pp. 142-149 ◽  
Author(s):  
S. Stoltze ◽  
J. Mikkelsen ◽  
B. Lorentzen ◽  
P. M. Peterson ◽  
B. Qvale
Keyword(s):  
Energy Saving ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Heat Storage ◽  
Waste Heat ◽  
Maximum Energy ◽  
Point Method ◽  
Batch Processes ◽  
Storage Tanks ◽  
Pinch Point

The waste-heat recovery in batch processes has been studied using the pinch-point method. The aim of the work has been to investigate theoretical and practical approaches to the design of heat-exchanger networks, including heat storage, for waste-heat recovery in batch processes. The study is limited to the incorporation of energy-storage systems based on fixed-temperature variable-mass stores. The background for preferring this to the alternatives (variable-temperature fixed-mass and constant-mass constant-temperature (latent-heat) stores) is given. It is shown that the maximum energy-saving targets as calculated by the pinch-point method (time average model, TAM) can be achieved by locating energy stores at either end of each process stream. This theoretically large number of heat-storage tanks (twice the number of process streams) can be reduced to just a few tanks. A simple procedure for determining a number of heat-storage tanks sufficient to achieve the maximum energy-saving targets as calculated by the pinch-point method is described. This procedure relies on combinatorial considerations, and could therefore be labeled the “combinatorial method” for incorporation of heat storage in heat-exchanger networks. Qualitative arguments justifying the procedure are presented. For simple systems, waste-heat recovery systems with only three heat-storage temperatures (a hot storage, a cold storage, and a heat store at the pinch temperature) often can achieve the maximum energy-saving targets. Through case studies, six of which are presented, it is found that a theoretically large number of heat-storage tanks (twice the number of process streams) can be reduced to just a few tanks. The description of these six cases is intended to be sufficiently detailed to serve as benchmark cases for development of alternative methods.

Research on the Devices of Waste Heat Recovery in Tea Dryer

2012 ◽  
Vol 482-484 ◽  
pp. 2161-2164
Author(s):  
Zhong Nan Tao ◽  
Lian Fa Yang ◽  
Ze Qiu Wu
Keyword(s):  
Energy Loss ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Great Part ◽  
Drying Process ◽  
New Device ◽  
The Status ◽  
Storage Type

The waste heat is a great part of energy loss in tea processing. The status of waste heat recovery in tea drying has been reviewed. The characteristics and the application of the devices used to recover the waste heat in tea drying have been introduced, such as the circulating type, the storage type and the exchange type. The drawback of the waste heat recovery devices which exists in tea drying process has been analyzed. And the new device of waste heat recovery in tea dryer has been mentioned.

scholarly journals A Smart Community Waste Heat Recovery System Based on Air Source-Sewage Source Compound Heat Pump

2021 ◽  
Vol 39 ◽  
pp. 503-511
Author(s):  
Yonggao Cheng ◽  
Yanqing Wu ◽  
Siran Bai
Keyword(s):  
Energy Saving ◽  
Heat Pump ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Waste Heat Recovery System ◽  
Recovery System ◽  
Heat Recovery System ◽  
Smart Community ◽  
Sewage Source

Compared with the traditional hot water production methods, heat pump systems have the unique advantages of high efficiency, energy saving, and eco-friendly, so they have a very good promotion and application prospect. The sewage source heat pump systems can recover the waste heat of high-temperature sewage produced in residential communities, for this reason, this study integrated the proven air source heat pump technology with the sewage source heat pump technology and conducted a research on the smart community waste heat recovery system based on the air-source/sewage-source Compound Heat Pump system (CHP system). In the paper, the design steps and equipment selection flow of the proposed system were given, the waste heat utilization rate of the proposed system was calculated, and the obtained experimental results verified the energy-saving effect of the proposed system, which had provided a reference for the application of the compound heat pumps in other occasions.

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