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Experimental test stand of a heat pump integrated in air handling unit

DOI: https://doi.org/10.3846/mla.2020.13075

Abstract

Heat pumps are becoming increasingly popular and are playing an important role in the heat and cooling supply chain of buildings sector. Although more than 160 years have passed since the manufacture of the first heat pump, this technology, designed to recover low­potential heat energy and its useful use, can be called an innovative and efficient energy transformer. Air­to­water and air­to­air heat pumps are becoming more popular today due to their installation cost compared to ground­to­water heat pumps. It has been noticed that recently air­to­air heat pumps are more often installed in modern air handling units. The main energy transformers in these air handling units are the air­to­air heat pump and recovery heat exchanger. In the scientific literature little attention is paid to the thermodynamic cycle of the combination of the air handling unit and the heat pump, as well as the search for new possibilities to change and control it, this is a potential direction that can increase the efficiency of the whole system. To study the control capabilities of the unit, an experimental stand of the heat pump built into the ventilation unit is needed; it would help validate the results of theoretical studies and investigate the possibilities of expanding the control. Therefore, this paper presents a review of the experimental stands of non­integrated heat pumps and integrated heat pumps in air handling unit. Based on this review, the basic requirements for the installation of an experimental stand of a heat pump built into an air handling unit are formulated and a conceptual scheme of this stand is drawn up.


Article in Lithuanian.


Vėdinimo įrenginio šilumos siurblio eksperimentinio tyrimo stendas


Santrauka


Šilumos siurbliai (ŠS) tampa vis populiaresni ir užima reikšmingą dalį pastatų šilumos bei vėsos aprūpinimo grandinėje. Nors nuo pirmojo ŠS pagaminimo jau praėjo daugiau nei 160 metų, šią technologiją, skirtą žemo potencialo šiluminei energijai atgauti bei naudingai panaudoti, galima pavadinti inovatyviu ir efektyviu energijos transformatoriumi. Šiandien ŠS „oras–vanduo“ ir „oras–oras“ dėl savo įdiegimo kainos lyginant su ŠS „gruntas–vanduo“ tampa vis populiaresni. Pastebėta, kad ŠS „oras–oras“ vis plačiau montuojami šiuolaikiniuose vėdinimo įrenginiuose. Šiuose vėdinimo įrenginiuose pagrindiniai energijos transformatoriai yra „oras–oras“ šilumos siurblys ir šilumogrąžis. Mokslinėje literatūroje mažai dėmesio skiriama vėdinimo įrenginio ir šilumos siurblio derinio termodinaminiam ciklui bei naujų galimybių paieškai jį keisti ir valdyti, o tai potenciali kryptis, kuri galėtų pagerinti visos sistemos efektyvumo rodiklius. Siekiant tyrinėti įrenginio valdymo galimybes, reikalingas į vėdinimo įrenginį integruoto šilumos siurblio eksperimentinis stendas, kuris padėtų validuoti teorinių tyrimų rezultatus bei atskleisti valdymo praplėtimo sprendinius. Todėl šiame darbe atliekama šilumos siurblių atskiro veikimo ir vėdinimo įrenginiuose integruotų eksperimentinių stendų apžvalga. Ja remiantis suformuluojami į vėdinimo įrenginį integruoto šilumos siurblio eksperimentinio stendo įrengimo pagrindiniai reikalavimai ir parengiama šio stendo principinė schema.


Reikšminiai žodžiai: vėdinimo įrenginyje integruotas šilumos siurblys, eksperimentinis stendas, šilumos siurblio termodinaminis ciklas.

Keyword : heat pump integrated in air handling unit, experimental stand, thermodynamic cycle of heat pump

How to Cite
Frik, A., & Bielskus, J. (2020). Experimental test stand of a heat pump integrated in air handling unit. Mokslas – Lietuvos Ateitis / Science – Future of Lithuania, 12. https://doi.org/10.3846/mla.2020.13075
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Sep 22, 2020
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