Manual to the offer check of terrestrial heat heaters

Manual to the offer check of terrestrial heat heaters (openPR) - for many years heat pumps are planned, installed and operated by the Stoltenberg energy GmbH. Lately the terrestrial heat industry and new offerers urge boomt on the market. From ignorance offers made, which are no longer durable during the later execution, to expensive additional charges will be often led or, under-be jubilant the customer. For this reason we arranged you in the following the most important recommendations, which are to help you, a correctly laid out to acquire economical and maintenance-poor plant:

• As the first step a detailed consulting discussion should take place. Place all questions, which have you concerning the technology, economy and the offerer. Ask purposefully after references and the experience of the offerer as well as the training the plant of planning coworker. Engineer-scientific training is essential thereby. A respectable offerer answers all questions without hesitating to you and you apart from the advantages also over risks and project-specific characteristics is gladly advised.

• On a customer inquiry first a preliminary inquiry should take place at the lower water authority in the district administration office or environmental office of your city whether geological conditions and the water law permit a terrestrial heat probe drilling or a groundwater use. Even if no probe can be installed, you do not have to do without a heat pump. A respectable enterprise will examine the employment of flat shifted soil collectors for you in this case.

• The efficiency of the heat pump depends on the temperature difference, which must be overcome. Heating systems which work with as low an inlet temperatures as possible, are therefore favourable. This applies particularly to under-floor heatings and wall panel heatings. With existing buildings with conventional heating surfaces the employment is excluded from heat pumps, makes however higher demands against planning. The dimensioning of the heat emission surface should be examined therefore by the offerer of a terrestrial heat heating thoroughly for the serviceability for a low-temperature system. Computations to the heat emission have hardly to be replaced thereby necessary Vorraussetzungen and by estimated values.

• An offer over a terrestrial heat heating should be provided by a general contractor over the production of the entire plant (drillings, probes, heat pump as well as if necessary distribution and heating surfaces). Due to the interfaces between the trades of the Heizungsbauers, the electrician and the drilling enterprise you minimize thereby your risk. Our past experiences show besides that also the costs fail smaller, if between the individual offerers skeleton agreements already brought in exist. Besides you should make certain that this fixed price offers are.

• For heat pumps and completely freshly also for drill companies a quality seal exists. Give to these makes and/or enterprises in principle preference.

• The experience shows that the heat pump is frequently too largely laid out. Which is sold thereby perhaps as „security “, is connected in each case with higher costs. Address your offerer on this point.

• Controlling it the design of the probes: Per kilowatt (KW) amount of heat of the heat pump should be calculated with a probe length by approximately 15 meters. Larger deviations from this value should be justified by geology.

• The heat pump should be used also for water heating. A separate electrical water heating is nearly always energetically more unfavorable and more expensive. As simple a system structure and a simple storage water heater as possible are recommended. The water heating should be absolutely a component of the scope of supply of the heat pump and take place without electrical heating staff.

• Leaving it together with the plant a heat counter to insert, which does not seize the heat emission of the heat pump - the extraction of heat from the soil. A separate electric meter should the current consumption of the heat pump (compressors), which circulation pumps in the saltwater circle and in the heat pump circle seize and the electrical heating staff which is available if necessary - not however the consumption of the circulation pump in the heating circle.

• With your power supplier after a special heat pump tariff and a subsidy and you these use yourselves an inquiring you. Experienced offerers of heat pump heating systems advise you besides over the advancement programs relevant for you.

• If you an under-floor heating have, should you without a buffer memory do. The experience showed that the possible disadvantages (disturbances, regulation expenditure, higher costs) to outweigh to be able. In this case you should do also without an individual room regulation (i.e. raumweise temperature control).

• In the past the pumps were frequently oversized for the circulation of the brine in the probes. Address your offerer on this point. „More security “can be translated also here particularly with „higher costs “. The pressure losses and thus cost of electricity are minimized by a correct interpretation.

• The efficiency of the heat pump depends on the temperature difference, which must overcome it. Minimize thus in each case the inlet temperature of your heating system. You can reach this by a shift „of the heating curve in such a way specified “. Given factory setting is often not the most favorable. Let from your offerer the regulation and particularly the influence of the heating curve explain itself. The same applies to the target temperature of the water heating. In both cases applies: As much (temperature) as necessary, but as few as possible. Grope along thus to your optimum near. Experienced offerers become at the beginning of the heating season the optimization of the heat pump for you make.

• Vintages you the heat counter as well as the electric meter monthly off and hold you the values. By a simple calculation you can determine the yearly work number of the plant (= yearly heat production/yearly current consumption). If the value is below 3,5, possibilities for improvement exist e.g. with the regulation with large probability. Address your offerer on it. Note however that with new buildings in the first year due to the building drainage a higher heat requirement and thus smaller yearly work numbers can be present.

We hope you a small assistance during the offer evaluation with the criteria specified here to have given. In each case we stand for you for all further questions gladly at any time for order, in order to make for you possible the decision for on a long-term basis economical and ecological heating without expensive „late sequences “.

Stoltenberg energy GmbH
Large Mühlenstr. 45
24217 beautiful mountain
fon 04344-4110-0
fax 04344-4110-20
www.stoltenberg-energie.de
info@stoltenberg-energie.de

Stoltenberg energy GmbH - your specialist in lasting warming and generation of current

We are offerers Blockheizkraftwerke vegetable oil-claimant by terrestrial heat heating systems near the surface and and look as a pioneer of the regenerativ energy industry on one over 10-year old experience back. Among our customers among other things owners of house of in and multi-family houses, carriers of local mechanisms, industrial companies, manufacturing ones and farmers rank.

By our know-how to implement customized heating systems we create a long-term and lasting heat supply, which is both pollution free and inexpensive. Thus we stand in tradition of our enterprise, which already looks back on one more than hundred-year history.

Beside Geothermie near the surface, we offer depth terrestrial heat probes for big customers and engage ourselves on the future market of hydrothermaler current and heat generation. It is our requirement to belong to the best ones. Therefore we set yardsticks during the energy optimization in engineer achievement, innovation and efficiency. And with everything that we do, we orient ourselves consistently at the needs of our customers, and the will to improve property ever further.

Faithfully our slogan: „No gas, no oil, no CO2 - with terrestrial heat “are pleased we heat to support you with the lowering of your energy costs and with a contribution to the climatic protection.

Dieser Artikel wurde veröffentlicht auf
OpenPR - http://openpr.de/news/109151/Leitfaden-zum-Angebotscheck-von-Erdwaermeheizungen.html