Replication data for : MultiPACK project_An integrated CO2 unit for heating, cooling and DHW installed in a hotel-Data from the field. (doi:10.18710/8O9ZV0)
(MultiPACK project)

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Replication data for : MultiPACK project_An integrated CO2 unit for heating, cooling and DHW installed in a hotel-Data from the field.

doi:10.18710/8O9ZV0

DataverseNO

2020-12-11

2

Tosato, Giacomo, 2020, "Replication data for : MultiPACK project_An integrated CO2 unit for heating, cooling and DHW installed in a hotel-Data from the field.", https://doi.org/10.18710/8O9ZV0, DataverseNO, V2

Replication data for : MultiPACK project_An integrated CO2 unit for heating, cooling and DHW installed in a hotel-Data from the field.

MultiPACK project

doi:10.18710/8O9ZV0

Tosato, Giacomo (Consiglio Nazionale delle Ricerche, Istituto per le Tecnologie della Costruzione)

NTNU – Norwegian University of Science and Technology

723137

DataverseNO

NTNU – Norwegian University of Science and Technology

Tosato, Giacomo

Söylemez, Engin

2020-12-10

https://doi.org/10.18710/8O9ZV0

Engineering, integrated CO2, heating, cooling, heat pump, multi-ejector, refrigeration

This dataset provides data for a new heat pump unit intended to provide heating, cooling and hot water to a hotel and using CO2 as the working fluid. The heat pump was installed in mid-2018 in a hotel located in a touristic area in North Italy and open nearly all over the year. The unit can benefit from groundwater as a heat source or heat sink. The heat pump features a two-phase multi-ejector as an expansion device. An original two-evaporator layout is implemented, where the first one is gravity driven and the second one is ejector driven. It is fully equipped with measurement instruments, data acquisition system and cloud data storage developed and tailored for the unit. The unit was developed, instrumented, installed and monitored within the H2020 MultiPACK the project, which aims at building confidence in integrated heating, ventilation, air conditioning and refrigeration packages based on CO2 technology in high energy-demanding buildings. In this dataset, operational parameters and performance data will be presented, related to winter season, thus to heating and domestic hot water service.

2019-04-16-2019-04-18

Experimental/field data

The heat pump is installed in a hotel located in a touristic area in North Italy: it is intended to provide heating, cooling and sanitary hot water to a hotel, which is open nearly all over the year. The unit can benefit from groundwater as the heat source or heat sink. The heat pump features a two-phase multi-ejector as the expansion device, which works in parallel to a high-pressure valve. An original two-evaporator layout is implemented, where the first one is gravity driven and the second one is ejector driven. Water flows firstly through the gravity-driven heat exchanger, where CO2 evaporates at the compressor suction pressure, and then through ejector driven heat exchanger, which benefits from a lower evaporation pressure, accordingly to the pressure lift provided by the ejector. The unit is reversible on the waterside, by means of a hydronic module made by three-way valves that can switch to the groundwater or the HVAC plant according to the building request. The unit can work in heating or DHW mode alternatively in wintertime, giving priority to DHW, using groundwater as the heat source. In summer, it can provide cooling and DHW at the same time using HVAC water loop as the heat source, thus providing a double useful effect. If cooling or DHW is not requested by the building, the hydronic module switches to groundwater heat exchanger acting as a heat source or sink according to the working mode. Fan coils are installed in the hotel rooms, providing heating and cooling, and they are fed by the hydronic water loop. Domestic hot water is produced and accumulated in two water tanks that are connected in series to allow stratification; in such a way only cold water flows to the heat pump DHW heat exchanger. Two compressors are installed, one of them is inverter-driven, and the capacity regulation of the compressors is based on the suction receiver pressure variation, which is influenced by the heating and cooling demand.

Giacomo Tosato et al 2020 J. Phys.: Conf. Ser. 1599 012058

10.1088/1742-6596/1599/1/012058

Giacomo Tosato et al 2020 J. Phys.: Conf. Ser. 1599 012058

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00_README_file.txt

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01_Field_mea_data_DHW.txt

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02_Field_mea_data_heating.txt

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