Authors

Energy modeling and experimental validation of heat pump operating modes in exhaust air heat recovery. Part 2. Energy, economic and environmental indicators

DOI: 10.17586/1606-4313-2024-23-1-43-49
UDC 697.97-5

Energy modeling and experimental validation of heat pump operating modes in exhaust air heat recovery. Part 2. Energy, economic and environmental indicators

Nikitina Veronika A., Sulin A.B., Muraveinikov S.S. , Nikitin А. А., Makatov Kirill

For citation: Nikitina V.A., Sulin A.B., Muraveinikov S.S., Nikitin A.A., Makatov K. Energy modeling and experimental validation of heat pump operating modes in exhaust air heat recovery. Part 2. Energy, economic and environmental indicators. Journal of International Academy of Refrigeration. 2024. No 1. p. 43-49. DOI: 10.17586/1606-4313-2024-23-1-43-49

Abstract
Comparative characteristics of two options for using a heat pump integrated into the ventilation system are considered: the one with heat recovery from exhaust air and another one with the use of outside air as a low-potential source. Energy modeling of the operating modes of the heat pump installation for the heating period in the climatic conditions of St. Petersburg was carried out after verification of the calculation method based on the results of a physical experiment. The simulation result revealed a significant potential for using the proposed system in three aspects: energy, economic, and environmental. The energy efficiency indicators of this system for the heating period for the conditions of St. Petersburg with an average heating capacity of about 22 kW are: COP is increased by 27.57%, the saved electricity brings a benefit of $ 2212.72, CO2 emissions are reduced by 15749.32 kg, the payback of the system is 2-2.2 years.

Keywords: energy modeling, extract air heat, heat pump, energy efficiency.

All references

1. Gorshkov A.S. Energy efficiency in construction: issues of regulation and measures to reduce the energy consumption of buildings. Magazine of Civil Engineering. 2010. No 1. P. 19-13. (in Russian)

2. Vakiloroaya V. et al. A review of different strategies for HVAC energy saving. Energy conversion and management. 2014. vol. 77. p. 738-754.

3. Tabakova A.S., Novikova O.V. Improving the efficiency of building heat consumption with the use of modern ventilation systems. Week of Science SPbPU. 2015. (in Russian)

4. Gaudiano P. Agent‐based simulation as a tool for the built environment. Annals of the New York Academy of Sciences. 2013. vol. 1295. no 1. p. 26-33.

5. Herrmann C. et al. Energy oriented simulation of manufacturing systems–Concept and application. CIRP annals. 2011. vol. 60. no 1. p. 45-48.

6. Lin Y. et al. Towards zero-energy buildings in China: A systematic literature review. Journal of Cleaner Production. 2020. vol. 276. p. 123297.

7. Muraveinikov S.S. et al. Average annual efficiency evaluation in the design of life support systems. AIP Conference Proceedings. AIP Publishing LLC, 2019. vol. 2141. no 1. p. 030019.

8. Administration of St. Petersburg: official website. Saint-Petersburg. [Electronic resource]: https://www.gov.spb.ru/helper/day/klimat/ (accessed 12.09.2022).(in Russian)

9. Nikitin A. A., Muraveynikov S. S., Krylov V. A. Prospects of using heat pumps in ventilation systems. Scientific journal of the SRY ITMO. The series "Refrigeration and air conditioning". 2016. No. 4. pp. 57-61.(in Russian)

10. Gubina I.A., Gorshkov A.S. Energy saving in buildings during heat recovery of exhaust air. Construction of unique buildings and structures. 2015. No. 4. pp. 209-219. (in Russian)

11. Nikitina V.A., Nikitin A.A., Sulin A.B., Ryabova T.V., Makatov K. Analysis of the heat recovery potential in the classroom. IOP Conference Series: Earth and Environmental Science. 2021, Vol. 866, No. 1, pp. 012012.

12. Sulin A.B. et al. Energy performance analysis of the temperature control system of an object with a random principle of thermal perturbations. IOP Conference Series: Materials Science and Engineering. 2020. vol. 939. no 1. p. 012075.

13. Nikitina V.A., Sulin A.B., Muraveinikov S.S., Nikitin A.A.,Makatov K.Energy Modeling and Experimental Validation of Heat Pump Operating Modes in Exhaust Air Heat Recovery. Part 1. Design and analysis model. Journal of International Academy of Refrigeration. 2023. No4. p.3-10. DOI: 10.17586/1606-4313-2023-22-4-3-10. (in Russian)

14. ASHRAE «International Weather for Energy Calculations» – URL: https://www.ashrae.org/technical-resources/bookstore/ashrae-international-weather-files-for-energy-calculations-2-0-iwec2 (accessed date 01.08.2023).

15. Deymi-Dashtebayaz M., Valipour-Namanlo S. Thermoeconomic and environmental feasibility of waste heat recovery of a data center using air source heat pump. Journal of Cleaner Production. 2019. vol. 219. p. 117-126.

16. Deymi-Dashtebayaz M. et al. A new multigenerational solar energy system integrated with near-zero energy building including energy storage–A dynamic energy, exergy, and economic-environmental analyses. Energy Conversion and Management. 2022. vol. 261. p. 115653.