求与太阳能热水器或其测控仪相关的英文论文！

Question

毕业设计要翻译两万五字符的外文论文，找了一些数据库没找到相关的，所以在此求助！

Answer 1

这是我找到的最不错的了，你就适当的的添加一些就行了 。

Thesis Title : Solar Water Heater Circulation by Stream Power

Candidate : Mr. Yossawin Kayanant

Thesis Advisor : Asst. Prof. Dr. Pichai Namprakai

Field of Study : Thermal Technology

Faculty : School of Energy and Materials
B.E. : 2546
Abstract

The objective of this research was to develop a passive solar domestic hot water (SDHW) heating
system utilizing flat plate collector, a newly designed, as well as a self pumping and self regulating
units. Advantages of solar water heater circulation by a stream power is to reduce 40 % weight of
equipments that are placed on the roof, by installing the large water storage tank at a lower level,
whereas the collector and upper header remains on the roof. The principle design of this system was
based on the different between temperature–pressure created by collector. It allows the downward
transport of heat from a collector by self pumping passive water vapor. The lifting height was tested at
1 and 1.5 m level, and the average temperature of the collector was about 70–90 ?C. Systems of this
type consists of the followings. Flat plate has a total gross surface area of 0.795 m2. Capacity of water

and air are 1.8 and 1.2 liters. Water volume circulation is 0.3 l/cycle. The collector absorbs the solar
energy and changes it into thermal energy in form of hot water in the collector. Vapor pressure drives
the hot water or vapor downward from collector to the storage tank. The storage water tank and air
space capacity were 19.8 and 0.2 liters. Water volume circulation is 0.5 l/cycle. It transfers heat from
flat plate collector to the storage tank. During pressurizing water–vapor, the cooler water would flow
up to the upper header. The capacity of upper water header was 1.5 liters. Water volume circulation is
0.8 l/cycle. Stored water flows from storage tank and adsorbs the solar energy then was transferred to
the upper header. The lift check valve during pressurizing water–vapor is closed to prevent reverse
flow of vapor from the collector to the upper header. Check valve was open and cause water in the
upper header drains by gravity into the collector. The total water circulation is 0.8 l/cycle, results in the
lifting height of 1 and 1.5 m. Water mass flow rate are 2.4 and 0.09 kg/h. Hot water temperature are 60
?C and 39 ?C. The circulation rates are 16 and 1 cycles/day. Average Daily thermal efficiency are 21 %

and 7 %, respectively. The system efficiencies are effected by insolation levels and thermal loss of
collector and hot water capacitance in the storage tank and lift height. Increasing of hot water
temperature can be obtained by reducing water capacitances in tank or reducing lift height or increasing
the collector area. The system efficiency can be increased by reducing thermal losses in all equipments,
using higher performance collector and improving heat transfer by enhancing well mixing in storage
tank with circulation for reducing stratification in hot water temperature level.

Keywords : Solar Water Heater / Flat Plate Collector / Circulation by Stream Power / Self Pumping