A water-loop heat pump was used in space heating system heat pump was applied using geothermal water between 13~18℃, and provided water of 45℃ in the system.
By calculating the heating regulation and the daily average outdoor temperature during heating supply,the relationship between the temperature of water supply and backwater in hot water heating system and the daily average outdoor temperature;
The Ministry of Construction point out definitely in the development aim in “Construction energy saving ‘nine-five’programming and 2010 programming”: For the concentration heating supply domestic construction will gradually install heat meter and regulation instrument in the future ten years and put in practice theworking according to the meter charging.
The original design of the computerized wireless dispatching system of town water and heating supply constitutes through dispatching center, Remote terminal station, Repeater station, the dynamic simulation screens and so on. Dispatching center computer software adopts Visual C++ 6.0 to compose on Windows 98 operating system platform. The communication program adopts MFC multithreading programming ideal in order to lift the systematic communication dependability- The design of Dynamic parameter table increases the systematic commonality.
According to the characteristics of heat transfer of automotive air-conditioning and the equivalent of temperature and humidity comfort chart that ASHRAE provided,analyzed the comfort standard of automotive air-conditioning,and proposed the control measure of temperature and moisture. at last, porposed the supply heating measure of automotive air-conditioning in winter.
The nonlinear PDEs consist of a heat equation with the Joule heating as a source and a current conservation equation with temperature-dependent electrical conductivity.
Compound 3 exhibited the enchased texture of a smectic liquid crystal from 209.4°C to 219.5°C on heating, while 2 exhibited a liquid crystalline phase from 87.4 to 83.2°C on cooling.
In particular, the differential thermal analysis curves for the decomposition of CeO2 nanocrystalline precursor were measured at different heating rates in air by a thermal analyzer (NETZSCH STA 449C, Germany).
In Russia, geothermal resources are predominantly utilized for space heating in several cities and settlements of the Northern Caucasus and Kamchatka with a total population of 500?000.
This result is probably ascribable to the accumulation of residues from leaded gasoline and lead-based paint in the past and the use of coal fire for space heating in older houses.
New developments in district heating supply, which lower the investment and operation costs and increase the service life and operational safety are gaining greater significance.