When the number of heat consuming installation changes, the redistribution of hot water flux in heatsupply system is illustrated by the hydraulic calculation of an existing heatsupply system.

The concentrated heating hot water boilers are normally built near the heat users,and the boiler running noise may produce pollution to the surroundings.

From a view of heat user,compares and analyses the economy and practicability of district heating, centralized heating and single household heating, finally reveals that the last can create more comfort, flexibility and convenience to heat users,so it s the best choice.

Importance of energy saving measures of the heat consumers in centralised heating systems;

Small idle power plant has been used as heat consumer to improve efficiency of generation unit during un-heating period of time,the remarkable economic benefit has been obtained.

The distances between thermal power plants and heat consuming installations are however relatively long, and the relevant national standards for heat supply can not satisfy the present situation of rapid industrial development in Zhejiang.

A user data distribution and update protocol was developed to take advantage of the peer-to-peer network,Simulations and tests demonstrate that the algorithm effectively handles simultaneous service request to .