Energy saving with variable speed pumps in on-demand irrigation systems

2011 ◽  
Vol 30 (2) ◽  
pp. 157-166 ◽  
Author(s):  
Nicola Lamaddalena ◽  
Sami Khila
Keyword(s):  
Energy Saving ◽  
Variable Speed ◽  
Irrigation Systems ◽  
On Demand

Experimental Research of Operation Performance of the Capillary Radiant Air-Conditioning Terminal Integrated with DC Variable Speed New Air Unit

2011 ◽  
Vol 374-377 ◽  
pp. 547-552
Author(s):  
Jian Bo Chen ◽  
Fei Cheng ◽  
Fen Li
Keyword(s):  
Energy Saving ◽  
Experimental Research ◽  
Air Conditioning ◽  
Storage Capacity ◽  
Heat Storage ◽  
Operation Mode ◽  
Water System ◽  
Variable Speed ◽  
Operation Performance ◽  
Cooling Ability

By means of experiment, the author analyzed the operation performance of the capillary radiant air-conditioning terminal integrated with DC variable speed new air unit. The results show that the operation mode that the capillary radiant air-conditioning terminal running combined with DC variable speed new air unit not only avoid the disadvantages of the capillary radiant air-conditioning such as temperature dropping slowly, condensation of moisture under hot and humid conditions during the cooling season, but also effectively overcome the problem that the cooling ability of the radiation surface is low caused by avoiding condensation, and the system can also take the moisture load indoor away as well as achieve the purpose of dehumidification. Besides, using the heat storage capacity of the capillary radiant air-conditioning terminal, controlling water- system of capillary radiant air-conditioning terminal to open and close appropriately can achieve the goal of energy saving.

Graphic determination of available energy-saving potential in a reservoir pumping application with variable-speed operation

2018 ◽  
Vol 12 (5) ◽  
pp. 1041-1051
Author(s):  
Tero Ahonen ◽  
Santeri Pöyhönen ◽  
Joni Siimesjärvi ◽  
Jukka Tolvanen
Keyword(s):  
Energy Saving ◽  
Variable Speed ◽  
Energy Saving Potential ◽  
Available Energy ◽  
Graphic Determination

Energy Regulation Based Close-Loop Variable-Speed Valve-Controlled-Motor System

2011 ◽  
Vol 328-330 ◽  
pp. 1904-1907
Author(s):  
Ming Xu ◽  
Bo Jin
Keyword(s):  
Control System ◽  
Energy Saving ◽  
Motor System ◽  
Safety Valve ◽  
Energy Regulation ◽  
Variable Speed ◽  
Throttle Valve ◽  
New Energy ◽  
Valve Control ◽  
Loop Scheme

A new energy-saving method with an energy regulation device (ERD) is presented. The ERD is composed of an accumulator, a proportional throttle valve and a safety valve. Due to the addition of the proportional throttle valve, the ERD becomes a flow-controllable element. It can adjust energy according to the system demand. The principle of energy regulation based close-loop variable-speed valve-controlled-motor is discussed in detail. And it can be conclude that the proposed close-loop scheme can gain a good response as the valve control system while the power is less obviously.

The Dispatch Method Based on Demand Response under the Pressure of Energy-Saving

2013 ◽  
Vol 860-863 ◽  
pp. 746-753
Author(s):  
Shu Xiang Wang ◽  
Ji Chun Liu ◽  
Chuang Deng ◽  
Wei Dong Zheng ◽  
Hou Dong Xu ◽  
...  
Keyword(s):  
Energy Saving ◽  
Demand Response ◽  
Optimal Allocation ◽  
Demand Side ◽  
Thermal Unit ◽  
Nsga Ii ◽  
On Demand ◽  
Unit Output ◽  
Grid Operation

To promote the development of energy-saving dispatch under the pressure of energy saving and environmental protection, this paper proposes an energy-saving dispatch method based on considering demand response, which establishes a bi-level optimization model based on the optimal allocation plan of thermal units and interruptible loads, and solve the problem with improved NSGA-II and sensitivity analysis between unit interrupt capacity and thermal unit output. The case study shows that this model can decrease the pollutants at both generation side and demand side significantly with guaranteeing the economic of power grid operation. The model can also give the dispatch schedule of thermal units and interruptible loads accurately and thus has some use value.

Sign in / Sign up

Export Citation Format

Share Document