Activities New Energy Award 2000 Chairman of New Energy Foundation Prize

New Energy Award 2000

New Energy Equipment / System Category

High Efficiency Solar System with Direct Heating of the Water (SWR-300)
Winner
Chofu Seisakusyo Co., Ltd.

The efficiency of SWR-300 is remarkably improved by direct heating method without using antifreeze liquid as a heating medium. In this system, water in the heat collector is directly heated by solar heat.
The effective use of pump reduced electricity consumption, and simplified the structure design, and this led to reduction of system price and construction cost.
Their contribution to dissemination of solar system with technological development on efficiency and cost reduction were highly evaluated.

Features of Equipment, Systems and Facilities

Unique solar system
"Solar thermal water heater" has gained recognition among consumers as a product of fuel cost saving and environmentally benign. However, its performance has not changed for a long time and consumers have lost their interests to renew the system. Under such circumstances, a new and unique product, which is quite different from the conventional "solar thermal system", has developed with concepts of environment preservation, high performance, and economic efficiency.
Various merits
- Direct heat method increases heat collecting efficiency by 20%
  (compared to the conventional products)
- Intermittent pump operation reduces power consumption by 60%
  (compared to the conventional products)
- Use of water instead of antifreeze liquid reduces impacts to the environment
- Use of a pressure pump that also works as a heat collecting pump makes high pressure hot water supply available.
- Construction is easy.
  The heat collector and hot water tank is connected with a single pipe.

Pumping water

When a sensor detects a hot water tank is full, an electric three-way valve opens and water is pumped up to the heat collecting plate.

Falling water

When the water is boiled in the heat collecting plate, the electric three-way valve opens and the boiled water falls into the hot water tank.

Hot water supply

When an outside-air temperature starts falling, the system stops pumping water and hot water is kept in the tank. Hot water is provided from a faucet by pump pressurize.

New Energy Award 2000

2002 / 2001 / 2000 / 1999 / 1998 / 1997 / 1996

A Message from NEF's Chairman / Role and Establishment of NEF / Organization / Activities / How to Get to NEF / Contact Us / Top Page

NEA
2002
2001
2000
1999
1998
1997
1996