By means of the FEA software to build models, the paper simulates heat of hydration of the cement and convection boundary conditions, and calculates the temperature field of hydration heat of the cement.

By means of FEA software to build model,the paper simulates heat of hydration of the cement and convection boundary conditions, calculates temperature field of hydration heat of the cement Computational results are compared with the experimental results,which shows that this computation means is workable,and suitable for similar engineering

We here described the possibility of the origin of life under hydrothermal conditions from point of review of hydrothermal biochemistry,by providing evidences of chemial synthesis,microbiology,molecular phylogenetic tree and exploration of the sea,and the model of the origin of life under hydrothermal condition as well.

Using glassy mass prepared in a platinum crucible as the raw material, colorless BSO crystals with dimensions 10×10×6 mm3 were successfully grown in 5 mol/L NaOH solution by two-step hydrothermal growth.

Design and analysis on the solar living hot water system in a central heating house;

The pre-conditions and approaches for the recycling of the exhaust heat of air conditioners are expounded and conclusion is drawn that it is feasible to make living hot water by recycling the exhaust heat of air conditioners.

Indicates that the heat pump water heater have obvious energy-saving advantage in supplying living hot water and air-condition.

A solar energy assisted heat pump system for air conditioning,hot water supply and heating are introduced,the experimental work on spring condition to produce hot water is specially discussed.

With the development of the people s living standard, household air-conditioner and hot water have become an indispensable part in our daily life.

The design scheme for preparing domestic hot water by using condensation heat from centralized air-conditioning system is analyzed with engineering example.

With the retrofitting project example in Shanghai area, which adopts the electrical boiler with heat storage system to supply domestic hot water, the paper analyses the initial investment of the retrofitting equipments, operating cost and the recovery period.

The extension of heating period and supply of domestic hot water are a way to improve the economic benefit of heating enterprises,but more heat loss may be caused and stronger alternating thermal stress shock may be produced in the heating system using district heating boiler room or heat and power plant as heat source of centralized heat-supply system.