This paper presents the results of tests to study the energy efficiency of air conditioners Split 9000 BTU test the air in normal operation and when the tune parts. of Evaporator units use DC power from solar energy. Power of the test in normal operating conditions the air power and average about 820 watts on system configuration and operation of Evaporator units. 645 air watts average power consumption can be reduced up to 175 watts of electricity equivalent to 21.34% of them compare the energy efficiency of the air conditioner from the label number 5 on the test. The energy efficiency of a 14.41 11.55 a 24.76% increase in energy efficiency

The sensitivity analysis in efficiency of solar water heater system self-circulated by a stream power was performed in this study. The mathematical model of the system was developed based on the experimental results to predict the available amount of water pumped temperature and pressure in main devices. This system was operated by using a simple flat plate solar collector with an exposed area of 1.58 m2 and a storage tank of 30 liters. The results of systematic performance which performed by math model was compared to the experimental results. It was found that the values of were 5.876% 3.583% and 1.361% for vapor pressure and temperature in the flat plate solar collector and temperature in the storage tank respectively. The system was workable when the solar energy input values were equal to or greater than 584 W/m2 607 W/m2 632 W/m2 and 662 W/m2 for discharge head 1 m 1.5 m 2 m and 2.5 m respectively. From system simulation the system could have the daily average thermal efficiency was between 2.94 – 11.47% and the daily average pump efficiency 0.00057 – 0.0026% depending on the intensity of incident solar radiation and the discharge head of the system.

This purpose of the research was to study of Solar Absorber Shape Effect in the Solar Air Heater. These has designed and constructed the solar air heater for drying agricultural products of two different types. Comparison of First thing used square type one glass layer used centrifugal fans to feed air and installed solar absorber which each made of sinusoidal corrugate galvanized steel sheet coated with dull black paint and each other made of trapezoidal corrugate galvanized steel sheet coated with dull black paint. The results of research showed that the solar absorber which each made of trapezoidal corrugate galvanized steel sheet coated with dull black paint is most suitable. Which has overall thermal efficiency 66% and can generate maximum temperature 96.13 degree of Celsius

This research was to study the feasibility of CIGS for condominiums in Thailand by studying the energy consumption of building which divide by behavior of users which interested in day time users and night time users. Then study approach and feasibility to apply CIGS for condominiums by consider energy consumption and economic efficiency of installation CIGS for energy conservation. The result showed that when installed 110 watts/m2 of CIGSs on windows in a room type can be provide electricity 2.51 kWh per day 2.81 kWh per day and 3.75 kWh per day which can be represented 40 percent of the total energy consumption. In other word can be reduce energy supply from grid per month 75.30 kWh 84.3 kWh and 112.50 kWh. While investment cost per square meter of CIGS is about 23000 - 35000 baht which equivalent to 3 percent of total condominium price that mean payback period is about 8 years. Although CIGS is not able to provide all of electric consumption in building but from the assessment of economics found that there is a very interesting to investment it should be interested policy for the government to enforce condominium to install CIGS for sustainable development.

FAO reported in year 2008 world paddy production more than 40 countries and about 60 million tones of rice straw were produced in Thailand. For most farmers use an easy method for land clearing by straw burning in open area. Greenhouse gases such as carbon dioxide(CO2) emissions from paddy field burning to atmosphere is causes of global warming problem. This project aimed to utilize agricultural waste from rice field to be cheap biomass energy was started in 2009 at Nhongjork area. The waste was mixed with molasses and kaolin in ratio of rice straw : molasses : kaolin as 80:10:10 by weights. A size of rice straw fuel pellet was 1.54 cm. diameter and 2 cm. height. The calorific value of the rice straw pellet was tested by using Gallekamp Autobomb instrument by ASTM(American Society of Testing and Materials) standard. The results of testing found : CO2 emission from rice straw fuel pellets as half of burning in open area (by weight). Cost of energy for cooking by using Bio-fuel pellets only 7 Baht( 0.25 US $) and half price by comparing with LPG. The useful of rice straw Bio-fuel pellet is one of a cheap biomass energy for household and small manufacturers.