APPLICATION OF ENERGY EFFICIENCY EVALUATION METHODS FOR COMMERCIAL BUILDINGS IN AGRIBUSINESS

Gabriel Filho, Luís R. A.; Rodrigues, Cristhian A.; Halmeman, Maria C. R.; Oliveira, Sandra C. de

doi:10.1590/1809-4430-Eng.Agric.v43nepe20220157/2023

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Scientific Paper • Eng. agríc. 43 (spe) • 2023 • https://doi.org/10.1590/1809-4430-Eng.Agric.v43nepe20220157/2023 copy

APPLICATION OF ENERGY EFFICIENCY EVALUATION METHODS FOR COMMERCIAL BUILDINGS IN AGRIBUSINESS

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Agribusiness and commerce are two major sectors that consume electricity. Agribusiness can generate energy but not enough to meet its needs. Thus, energy efficiency is fundamental for the sector’s sustainability. This study aimed to apply PROCEL energy evaluation methods in a Brazilian agribusiness company, specifically in the meat retail sector, located in the Alta Paulista region. This research has a quantitative approach, and PROCEL’s RTQ-C manual, bibliographical research on the energy issue, and the functioning of the company’s environment were used. The commercial establishment received the B classification index, which can be considered good but has several points of improvement, mainly on air conditioning, which provides better energy efficiency to the company. Therefore, the company can obtain economic and environmental returns by improving such areas, and the present research serves as a basis for evaluating energy efficiency in other companies in the same sector.

RTQ-C; electrical energy; retail sector; buildings

Classification	Efficiency
Classification	Minimum	Maximum
A	-	Icmaxd - 3i
B	Icmaxd - 3i + 0.01	Icmaxd - 2i
C	Icmaxd - 2i + 0.01	Icmaxd - 1
D	Icmaxd - i + 0.01	Icmaxd - i + 0.01
E	Icmaxd + 0.01	-

Variable	Abbreviation	Definition	Value
Roof projection area	Arp	Horizontal projection area of the roof, including covered or uncovered terraces and excluding eaves, marquees, and roofs over balconies – the latter as long as it is out of line with the building.	211.64 m²
Total area	Atot	Sum of the floor areas of the building’s closed environments, measured externally.	253.878 m²
Building envelope area	Aenv	Sum of areas of facades, gables, and roof, including openings.	660.263 m²
Total volume	Vtot	Volume delimited by the external closures of the building (facades and roof), except for uncovered internal courtyards.	1777.146 m³
Height factor	FH	Ratio between the roof projection area and the total built area (Arp/Atot), except for basements.	0.833629
Shape factor	FS	Ratio between the building envelope area and the total volume of the building (Aenv/Vtot).	0.37153
Percentage of facade opening	PFO	Ratio between the sum of the glazed opening areas or with transparent or translucent closing of each facade and the total facade area of the building.	3%
Solar factor	FS	Ratio between the heat gain that enters an environment through an opening and the solar radiation incident on this same opening.	0.87
Vertical shading angle	VSA	Angle formed between two planes that contain the base of the opening.	3.08756
Horizontal shading angle	HSA	Angle formed between two vertical planes.	12.43007

Local	Power (W)	Area (m²)	Dpil (W m⁻²)	Environment score	Limit A (W)	Limit B (W)	Limit C (W)	Limit D (W)
Sales area	144	28.4	5.07	A	514.07	616.88	719.7	822.51
Frozen room	72	12.31	5.85	B	61.56	73.87	86.18	98.5
Men’s restroom	54	5.32	10.15	D	26.61	31.93	37.25	42.57
Women's restroom	54	5.32	10.15	D	26.61	31.93	37.25	42.57
Cutting room	28	8.78	3.19	A	93.89	112.67	131.45	150.23
Deboning room	72	15.9	4.53	A	170.12	204.14	238.17	272.19
Antechamber	72	19.3	3.73	A	137.02	164.42	191.82	219.23
Utensils/ kitchen washing	72	8.74	8.24	A	93.48	112.17	130.87	149.56
Seasoning room	72	7.76	9.27	A	83.08	99.7	116.32	132.93
Total	640	111.8	60.18	-	1206.4	1447.7	1689	1930.3
Mean	71.1	12.4	6.69	-	134	160.9	187.7	214.5

Environment	Type	Efficiency	Power (BTU h⁻¹)	Weighting coefficient	Numerical equivalent	Weighted result
Sales area	Split	A	30000	36%	5	1.8072289
Cutting room	Forced	E	12000	14%	1	0.1445783
Deboning room	Split	C	30000	36%	3	1.0843373
Cold chamber	Forced	E	11000	13%	1	0.1325301
Total			83000	100%		3.1686747

Variable	Description	Value
EqNumEnv	Numerical equivalent of the building envelope	5
AC	Useful area of air-conditioned environments	71.055
UA	Useful area	148.361
TSE	Useful area of non-air-conditioned transient stay environments	46.818
ANC	Useful area of non-air-conditioned environments for a prolonged stay	0
EqNumV	Numerical equivalent of non-air-conditioned and/or naturally-ventilated environments	3
EqNumLP D	Numerical equivalent of the lighting system	5
EqNumAC	Numerical equivalent of the air-conditioning system	3
b	The score obtained by the bonuses	0

Associação Brasileira de Engenharia Agrícola SBEA - Associação Brasileira de Engenharia Agrícola, Departamento de Engenharia e Ciências Exatas FCAV/UNESP, Prof. Paulo Donato Castellane, km 5, 14884.900 | Jaboticabal - SP, Tel./Fax: +55 16 3209 7619 - Jaboticabal - SP - Brazil
E-mail: revistasbea@sbea.org.br

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[1] *Corresponding author. São Paulo State University (UNESP), School of Science and Engineering/Tupã - SP, Brazil. E-mail: gabriel.filho@unesp.br | ORCID ID: https://orcid.org/0000-0002-7269-2806