by illiquid

Ground source heat pump system frequency control case description – source heat pump, inverter – hea

Description: In this paper, a hotel in Hunan use of groundwater source heat pump central air conditioning system run status, according to the characteristics of its own air pump for the system proposed frequency control energy saving proposals and programs, using equivalent peak hours method and the static energy recovery from detailed demonstration of both the feasibility of the reform program. The results show that the reform program of not less than the heat pump to ensure the minimum requirements of the water at the same time, automatically adjust according to changes in load flow pumps, energy-saving effect is remarkable, static short payback period, is feasible.

Keyword: Ground source heat pump inverter control saves energy

1 INTRODUCTION Centralized air conditioning system to create a comfortable environment for people and also brought energy issues, how to meet the air-conditioned comfort while also maximizing energy conservation, has been growing concern for people.

Current air conditioning system design and selection of pumps and other equipment are carried out according to the most adverse conditions, and that left a certain margin. As the seasons, day and night and the customer load changes, the actual air-conditioning heat load most of the time than the design load is low, most of the time air-conditioning system is in part load operation. The operation is the air-conditioning pumps work all year long at rated operating conditions, only through the throttle to reduce the water flow to meet the load requirements, making water pumps most of the power consumed in overcoming the resistance of the throttle valve, waste water pump running delivery of energy. General air pump air conditioning system the total power consumption accounts for about 20-30%, so saving water system with low load transport energy, reducing energy consumption of the entire air conditioning system is significant. In this paper, a hotel in Hunan

used groundwater source heat pump system, according to the status quo of the system to run water pumps for closed loop air-conditioning energy-saving automatic frequency control, from energy conservation and passive recovery period, demonstrates that the transformation program is effective feasible.

2 Air Conditioning System Overview The hotel is located in Yangtze River region northwest of the Li County of Hunan Province, the author in January 2003 to March of the hotel’s winter ground source heat pump system operating conditions tested, the test results order as Table 1 . As the hotel’s occupancy rate, outdoor air temperature change, human activity content and other reasons, the system is basically a load of 80% in the design and the following operation, which runs on the design load of 60% of the possession of 63.48%. Obviously the state selected under full load heat pump units, water pumps and other equipment so that in their long-term continuous operation under part load, low-efficiency equipment, most of the time in working condition. The system heat pump units running in parallel and a small, heat capacity, respectively 100KW, 40KW; two parallel hot water circulation pump the same model, the nameplate rated power are 2.2KW; deep well pump nameplate rated power 7.5KW (system diagram shown in Figure 1), and the constant flow of all pumps are running, always running frequency mode. When the unit is running at part load, often through a small tube off the road to adjust the water supply valve, causing a great deal of energy waste, so we need to look at improvements to the air conditioning system.

Table 1 of the hotel air conditioning load in winter time frequency

Find More Heating And Cooling Articles

Peritoneal | Winnings | Divergence | Depositsthe | Determinations | premium-cccam-server | Tips On How To Help A Family Member With Depression | What You Will need to Know Now Ahead of Acquiring Your Very first Property | State Pension Plan Rates of Return Under Review | Plumber Hull | Take A Look At These Payday Loan Tips! | Human Growth Hormone – its Important Role in the Human Body. | The economy is finally getting healthier. So Scotland Jobs is able to offer a | Things To Know Before You Get A Payday Loan | Are You Looking To Avoid Bankruptcy? Try These Tips!

by sean dreilinger

The History of Air Source Heat Pumps

Article by Green Air Central Heating

The air source heat pump’s conception resulted from the invention of air conditioning units. It was Willis Carrier, a mechanical engineering graduate who initially came up with the first drawings for an air conditioning unit in 1902. In 1914 Willis Carrier lost his job due to cut backs as World War 1 began. It was than that Carrier and seven fellow mechanical engineers set up their own company, the Carrier Engineering CorporationThe air conditioning units employed a ‘refrigeration cycle’ in order to produce cooler air, therefore de-humidifying and cooling the environment. Air source heat pumps adopt a similar process in reverse, therefore emitting heat instead of cooler air into the environment.

heat pumps are more commonly used in milder climates where temperatures are more consistent although there have been recent developments as in 2007 an Oklahoma inventor developed an ait to air heap pump defrosting system, allowing for their use in colder climates.

There are now many companies producing heat pumps such as the Mitsubishi Ecodan heat pump. Heat pumps also come in numerous sizes and power variations now meaning that there are models to fit several sizes of household or even for corporate use.

In recent years, due to natural depleting natural resources, many people are looking for greener home heating solutions. There are many options available on the market, but in European countries the air source heat pump has been favoured. Suited to the most climates now the air source heat pump systems are fitted to the exterior of the residence and can provide up to a 40% saving on energy bills, 50% reduced carbon footprint and increased energy efficiency.

Although relatively new within the UK market, there is a huge adoption in Europe, 300,000 units were sold in Germany and France in 2008 alone. With the large environmental and monetary benefits it is predicted that air source heat pumps will become more widely used throughout the UK.

To find out more about the Mitsubishi Ecodan air source heat system please visit the Green Air Central Heating website for more information.

More Heat Pump Articles

Overthetop | Ascari | Power | Chipperfield’s | 5 | How To Get A Trim Body | How to Decide on an Organic and natural SEO Service Provider | 00327r | Quantum Physics and Legislation of Attraction – What Is the Website link? | rubber matting | Seo expert advice on improving your website | Live A Stress Free Life With These Tips | Facebook blogs | Teacher Hobson | Auto Insurance Questions Got You Stranded? These Answers Will Get You Back On