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[121430] Artykuł:

Advanced Method of Variable Refrigerant Flow (VRF) System Design to Forecast on Site Operation—Part 3: Optimal Solutions to Minimize Sizes

Czasopismo: Energies/ Latest Research of Building Heat and Mass Transfer Tom: 16(5),, Zeszyt: 2417, Strony: 1-23
ISSN: 1996-1073
Opublikowano: 2023
Liczba arkuszy wydawniczych: 1.00

Autorzy / Redaktorzy / Twórcy

Imię i nazwisko	Wydział	Katedra	Do oświadczenia nr 3	Grupa przynależności	Dyscyplina naukowa	Procent udziału	Liczba punktów do oceny pracownika	Liczba punktów wg kryteriów ewaluacji
Mykola Radchenko			Nie	spoza "N" jednostki	Inżynieria środowiska, górnictwo i energetyka	20	.00	.00
Andrii Radchenko			Nie	spoza "N" jednostki	Inżynieria środowiska, górnictwo i energetyka	20	.00	.00
Eugeniy Trushliakov			Nie	spoza "N" jednostki	Inżynieria środowiska, górnictwo i energetyka	20	.00	.00
Anatoliy Pavlenko	WiŚGiE	Katedra Fizyki Budowli i Energii Odnawialnej*	Tak	zaliczony do "N"	Inżynieria środowiska, górnictwo i energetyka	20	140.00	140.00
Roman Radchenko			Nie	spoza "N" jednostki	Inżynieria środowiska, górnictwo i energetyka	20	.00	.00

Grupa MNiSW: Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A)
Punkty MNiSW: 140

DOI

Słowa kluczowe:

air conditioning system load range refrigeration capacity excess threshold temperature level of loading

Keywords:

air conditioning system load range refrigeration capacity excess threshold temperature level of loading

Streszczenie:

Outdoor air conditioning systems (ACS) are used as autonomic systems as well as in combined outdoor and indoor ACS of the variable refrigerant flow (VRF) type, with variable speed compressors (VSC) as their advanced version. Methods for determining the optimal value of refrigeration capacity and providing the maximum rate of the summarized annual refrigeration energy generation increment, according to its needs at minimum compressor sizes and rational values, are applied to reveal the reserves for reducing the designed (installed) refrigeration capacity, thus enabling us to practically achieve maximum annual refrigeration energy generation as the primary criterion at the second stage of the general design methodology previously developed by the authors. The principle of sharing the total thermal load on the ACS between the ranges of changeable loads for outdoor air precooling, and a relatively stable load range for further processing air are used as its basis. According to this principle, the changeable thermal load range is chosen as the object for energy saving by recuperating the excessive refrigeration generated at lowered loading in order to compensate for the increased loads, thereby matching actual duties at a reduced designed refrigeration capacity. The method allows us to determine the corresponding level of regulated loads (LRL) of SRC and the load range of compressor operation to minimize sizes.

Abstract:

Outdoor air conditioning systems (ACS) are used as autonomic systems as well as in combined outdoor and indoor ACS of the variable refrigerant flow (VRF) type, with variable speed compressors (VSC) as their advanced version. Methods for determining the optimal value of refrigeration capacity and providing the maximum rate of the summarized annual refrigeration energy generation increment, according to its needs at minimum compressor sizes and rational values, are applied to reveal the reserves for reducing the designed (installed) refrigeration capacity, thus enabling us to practically achieve maximum annual refrigeration energy generation as the primary criterion at the second stage of the general design methodology previously developed by the authors. The principle of sharing the total thermal load on the ACS between the ranges of changeable loads for outdoor air precooling, and a relatively stable load range for further processing air are used as its basis. According to this principle, the changeable thermal load range is chosen as the object for energy saving by recuperating the excessive refrigeration generated at lowered loading in order to compensate for the increased loads, thereby matching actual duties at a reduced designed refrigeration capacity. The method allows us to determine the corresponding level of regulated loads (LRL) of SRC and the load range of compressor operation to minimize sizes.

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