Tagesübersicht Dienstag 22. Oktober 2019

Heating and cooling and their role in view of decarbonisation of our society are increasingly in the spotlight: This presentation gives an overview of the European and global landscape, societal trends and the role that HVACR and heat pumps can and have to play in this context

The aim of this study was to analyze if the information given on the Energy Labels of air source heat pumps give the consumer in Nordic countries relevant information on energy performance. The methods used are literature studies, browsing on the internet for product data and interviews.

Comfort Climate Box Integrated systems consisting of heat pumps and storage for heating and DHW are an important technological option to accelerate the use of renewable energy for heating and cooling.

Nearly zero energy buildings are the future building standard in the EU and many other countries. IEA HPT Annex 49 investigates heat pump integration and design for the application in nZEB by simulation and field monitoring.

My presentation will introduce an effort by IEA-HPC Annex 54: Heat Pump Systems with Low GWP Refrigerants. This annex is aiming at promoting low GWP refrigerant application to accelerate phase down of high-GWP HFCs.

The paper starts with an overview where water (R718) was used as a refrigerant. A low capacity heat pump system and its performance is introduced. Finally, an outlook is given, where water as a refrigerant of heat pumps can expect a promising future.

AIT developed a mobile app with which the sound propagation of heat pumps can be visualized. The device is positioned with the help of Augmented Reality and the propagation is displayed in color. Results from accredited measurements are used as the basis for the acoustic propagation calculation.

The future scenario of HP will be based on many refrigerants which belong to A2L if not A3 category. As consequence and in addition to the well-known efficiency challenges we have now to deal with a new design criterion: don' t exceed the maximum refrigerant charge!

In this work the evolution of CO₂ cycles will be presented to show which possibilities this technology provides to the HVAC applications. Cycles will include single stage, cascade, dual stage and high efficiency solutions such as mechanical subcooling, parallel compression and ejectors

Four different kinds of heat exchangers are tested with a wall-mounted heat pump water heater which volume is 80L, to verify performance and energy efficiency. The test result shows, for condenser, it could get better heating efficiency and temperature rising speed by 16mm width MCHE.

How can a component manufacturer like ebm-papst support the heat-pump industry with regard to low-noise applications, high efficiency systems, predictive maintenance topics and the use of new refrigerants?

The presentation will give an overview over the latest developments of the BITZER compressor technologies from comfort cooling to space heating and high temperature heat pumps combined with some project examples.

Due to the late transition in most of the industries, there is an absolute need for HVAC installations to switch to low GWP refrigerants. At the center of this presentation are the HFO and HFO blends, which can meet the requirements of heat pump systems in the short/long term.

This presentation gives a brief introduction into a charge reduced and environmental friendly heat pump. It is charged with 150g R-290. The heat pump is designed as a brine to water heat pump with a minimum of installation space.

For heatpumps, both residential and industrial, availability and noise emission are critical key factors for content customers. Utilizing smart components connected to a cloud can contribute to address these factors by providing remote monitoring and diagnosis including predictive maintenance.

Restrictions resulting from the F-Gas Regulation and Ecodesign Directive force the heat pump market to look for alternative refrigerants to replace R410A and R407C.

The requirements as regards to the ecological footprint of heating and cooling concepts are growing continuously. This presentation introduces absorption heat pumps as an energy efficient solution for commercial and industrial applications with big base loads and high hot water temperatures.