Large number of presentations on HPWH related topics

Refrigerants

• 031 – Bo Zheng (Gree), Experimental Investigation on One-time Heating R32 Two-stage Air Source Heat Pump Water Heater, Xiangfei Liang, Rong Zhuang (Gree Electric Appliances, Inc. of Zhuhai)
• 102 – Tyler Shelly, Dynamic Modeling and Charge Minimization Study of a Packaged Propane Heat Pump with External Flow Reversal for Cold Climates, Davide Ziviani, Riley Barta, Eckhard Groll (Purdue University)
• 108 – Emilio Navarro-Peris, Analysis of the Refrigerant Maldistribution of Propane Evaporating in Brazed Plate Heat Exchangers as a Function of Operating Conditions, Lucas Alvarez, Paloma Albaladejo, Jose Miguel Corberan (Universitat Politecnica de Valencia), Lena Schnabel(Fraunhofer Institute for Solar Energy Systems ISE),
• 117 – Yu-Jia He (Tongji University), Approaching Optimal High Pressure by Charge Management in Transcritical CO2 Heat Pump Water Heater, Xing-Yu Liang, Jia-Hao Cheng, Liang-Liang Shao, Chun-Lu Zhang, Tongji University,
• 136 – Sergio Maria Capanelli – Benefits and reliability of air-to-water heat pumps in residential applications, using R-290 refrigerant and an alternative design solution to guarantee high safety with standard components, Carel Industries S.p.A., Italy,
• 172 – Manuel Verdnik, René Rieberer, High-temperature vapor compression heat pump using butane (R600) – development of a prototype and first measurements, Graz University of Technology,
• 203 – Lena Schnabel, Evaluation of a Lab Scale Low Charge Heat Pump Circuit Using Propane, Clemens Dankwerth, Timo Methler, Simon Braungardt, Thore Oltersdorf, Christian Sonner, Marek Miara, Peter Schossig (Fraunhofer Heating and Cooling Technologies),
• 204 – Kashif Nawaz, Alternate refrigerants for Heat Pump Water Heater Applications, Oak Ridge National Laboratory, Bo Shen, Van Baxter, Omar Abdelaziz(Oak Ridge National Laboratory),
• 297 – Takaoki Suzuki, et al, Annual Performance Assessment of Heat Pump Water Heater Technology based on Thermodynamic Properties of Various Refrigerants, Zheng Ge, Muhamad Yulianto, Yoichi Miyaoka, Seiichi Yamaguchi, Kiyoshi Saito, Waseda University,
• 354 – Gu Hwang Kang, Study on the Performance of Heat Pump by Mixing Ratio of Isobutane/Propane Mixed Refrigerants, Sun_ik Na(Seoul National University), Min Soo Kim(Seoul National University),

Phase Change Materials

• 032 – Lingkun Liu, Optimization of Phase Change Thermal Energy Storage Unit based on a New Thermal Resistance Mode, Xiangfei Liang(Gree Electric Appliances, Inc. of Zhuhai),
• 036 – Yiyuan Qiao, Numerical Investigation on PCM-to-refrigerant Heat Exchangers for Thermal Energy Storage, Yunho Hwang, Tao Cao, Jiazhen Ling, Vikrant Aute (University of Maryland)
• 335 – Zhanpeng Liu (Tongji University), Investigation on System Performance of Air Source Heat Pump Water Heater with Phase Change Material, Naiping Gao(Tongji University)†, Tiantian Wang(Tongji University), Hengyi Zhao(International Copper Association), Yifeng Gao(International Copper Association),

Heat Exchangers (Condensor/evaporator)

• 088 – Christoph Reichl, Frosting and Defrosting Behavior of Evaporators, Mirza Popovac, Felix Hochwallner, Felix Linhardt, Thomas Fleckl, Johann Emhofer (AIT), Peter Wimberger (Vienna University of Technology),
• 110 – Jiazhen Ling, A Dynamic Model for Microchannel Heat Exchanger under Frost Conditions, Lingzhe Wang, Vikrant Aute(University of Maryland), Rohit Dhumane(Modine Manufacturing Company),
• 140 – Jin Woo Yoo, Study on the Determination Method of Defrosting Start Time by Calculation of Frost Volume, Dong Ho Kim, Seok Ho Yoon, Chan Ho Song, Kong Hoon Lee, Ook Joong Kim (Korea Institute of Machinery and Materials), Yoong Chung, Min Soo Kim(Seoul National University)
• 244 – Masafumi Katsuta, Study on the Frosting Phenomena between Concavity and Convexity Plate under Forced Convection. The Prediction of Frost Layer Growth using the Observation from the Frost and Defrost Multi-cycle Experiment, Shota Ikutaya, Junya Yamagishi, Rio Asakawa, Yuki Terakado, Sangchul Bae (Waseda University),
• 334 – Tiantian Wang (Tongji University), Experimental Investigation of Condenser with Small Diameter Copper Tube in Air Source Heat Pump Water Heater, Naiping Gao (Tongji University), Zhanpeng Liu (Tongji University), Tingwei Fan (Gomon New Energy Ltd. of Jiangsu Province), Hengyi Zhao (International Copper Association), Yifeng Gao (International Copper Association),

Control strategies smart

• 042 – Christina Betzold, Control Strategies for Modulating Heat Pumps in a Plus Energy Building, Susanna Bordin, Arno Dentel, Gunnar Harhausen (Technische Hochschule Nürnberg Georg Simon Ohm)

Examples/monitoring

• 059 – Cordin Arpagaus, et al, Field performance of domestic heat pumps for heating and hot water in Switzerland, NTB University of Applied Sciences and Technology Buchs,
• 079 – Emilio Navarro-Peris, Design of a Grey Water Heat Recovery System in Order to Satisfy the Domestic Hot Water Demand of a Block of Dwellings, Estefania Hervas-Blasco, Jose Miguel CorberanXimo Masip(Universitat Politecnica de Valencia)
• 255 – Omar Montero Dominguez, Air-to-water Heat Pumps as a Substitution of Oil-boiler in a Non-retrofitted Multi-family Building of the 70’s. In-situ Monitoring, Actual Energy Balance and Performance, Carolina De Sousa Fraga, Pierre Hollmuller, Simon Callegari(University of Geneva)
• 301 – Wim Boydens (boydens engineering / Ghent university)- Control Strategy Assessment of a Small GSHP Sourced DH System with End User DHW Booster Heat Pumps, Sigrid Feyaerts(KU Leuven), Annelies Vandermeulen(KU Leuven/VITO/EnergyVille), Lieve Helsen(KU Leuven/EnergyVille),

Modelling

• 074 – Philipp Mehrfeld, Model Calibration of an Air Source Heat Pump System for Transient Simulations in Modelica, Markus Nürenberg, Dirk Müller(RWTH Aachen University, E.ON Energy Research Center, Institute for Energy Efficient Buildings and Indoor Climate),

Alternatives

• 206 – Kyle R. Gluesenkamp, et al, Semi-open Absorption Water Heater Experimental Results,
• 224 – Korbinian Kramer (PA-ID), Single Source Solar Thermal Heat Pump for Residential Heat Supply: Performance with an Array of Unglazed PVT Collectors, Christian Schmidt, Arim Schäfer(Fraunhofer ISE),
• 352 – Therese Guttmann, Diffusion Barriers and Strategies for Heat Pump Systems with Integrated Storage and Photovoltaic in Austrian 1-2 Family Dwellings: an Explorative Investigation for the IEA HPT Annex 55/ECES Annex 34, AIT, Austria,
• Euy-Joon Lee et al, PVT Geo Coupled Air to Water Heat Pump System Twin Test Cell Experimental Study, Korea Institute of Energy Research,

Boundary conditions

• 134 – Ivan Malenkovic, Results of an Interlaboratory Comparison on Four Different Heat Pumps: Standards on the Test Stand, Urs Gumbel, Christoph Thoma, Fraunhofer Institute for Solar Thermal Systems (ISE),
• 150 – Cate Lyon, Disruption to heat business models: from shifting boxes to selling comfort, Lindsay Sugden, Roxanne Pieterse, DELTA-EE,
• 151 – Cate Lyon, Electrification of Heat and Decarbonisation of the Electricity System: Sector Coupling is Creating Opportunities for Heat Pumps, Lindsay Sugden, DELTA-EE,
• 178 – Klemens Marx, Dynamic Performance Tests of a Heat Pump Cycle Integrated Latent Heat Thermal Energy Storage for Optimized DHW Generation, Johann Emhofer(AIT Austrian Institute of Technology), AIT,