Danfoss will participate actively in the summit offering several lectures held by key note speakers. We also welcome you to visit our booth where you can meet up with our sales and support team and request further information on our solutions and products for your specific Heat Pump application.
Summary of Lectures Offered by Danfoss
Boost Savings with Micro Plate Heat Exchangers Technology
Enabling efficient heat transfer is one of the most critical issues for next-generation heat pumps. The innovative Danfoss micro plate heat exchanger (MPHE) takes heat exchanger technology and performance a step beyond the traditional brazed plate heat exchangers (BPHE’s), still most commonly used in heat pump applications. As a result, MPHE technology is already the preferred and proven option for a number of European heat pump OEMs, where it is delivering vital savings in both money and natural resources.
MPHE technology minimises refrigerant hold-up volumes, with a reduction of as much as 40% compared with an equivalent BPHE. The benefits – economic, environmental and regulatory – strongly support the MPHE as the heat exchanger of choice for evaporators and condensers in modern heat pumps.
Mr. Jörg Saar, Heat Pump Application Manager, Danfoss Automatic Controls will offer a lecture with the title:
Influence of Refrigerant Injection into Evaporators on COP
The efficiency of a heat pump is influenced by many factors.
One of these factors with considerable influence is how the refrigerant injection into the evaporator is controlled. To enable best heat transfer and highest efficiency, all parts of the evaporator should contain evaporating refrigerant. At the same time, no liquid refrigerant should reach the compressor to avoid efficiency reductions or even damages. To obtain a balance between these two targets require a controlled refrigerant injection. Expansion devices are used to provide this control.
To conclude, Mr. Jean-Francois Heitz, Marketing Product Manager at Danfoss Commercial Compressors, will hold a lecture titled:
Liquid Injection Versus Vapour Injection in Heat Pump System
When comparing heat pump with gas or oil furnace, the annual energy bill for space heating or Hot Sanitary Water (HSW) production shows huge difference. For a 50 rooms hotel application, the heat pump system can reduce the operating cost by 50% compared to the alternate furnace solutions.
One limitation for the commercial heat pump was until now the restricted operating temperature range. Heat pump were not able to run at high condensing temperature (up to 65°C) for HSW or space heating in retrofit (with old radiator systems) while evaporating very low (down to -20°C) like it is usually the case in cold countries.
Both technology present benefits and drawbacks but it is up to the heat pump manufacturer to make the choice based on the complete system impact overview and on his product strategy. The liquid injection is a very competitive solution and that’s why Danfoss has selected this technology and integrated it in its new product range called Performer PSH.