2 Energy Survey semana (Dranetz)

Willows Swim Club é um clube privado, instalação de natação e recreação de propriedade dos membros localizada no centro de Nova Jersey. O clube de natação oferece espaço de cozinha para um restaurante local operar uma concessão de alimentação. Sendo oferecido como um serviço aos seus membros, atualmente não há cobrança de aluguel ou serviços públicos. Contudo, Dado o actual clima económico, o clube de natação está a considerar cobrar ao concessionário na próxima época o reembolso dos custos de serviços públicos incorridos na operação da área de concessão. O objetivo principal desta auditoria energética foi medir a procura elétrica e o consumo de energia da área de concessão para determinar a procura e a utilização durante um período médio de pico de operação no verão., representando o pior caso de demanda e uso de energia. Esta informação será usada para determinar tarifas razoáveis ​​de serviços públicos ao negociar o contrato para a próxima temporada..

O clube de natação é um negócio sazonal que opera durante os meses de verão, do Memorial Day ao Dia do Trabalho, todos os anos.. A concessão funciona 7 dias por semana, das 11h às 19h, todos os dias. Certos dias têm horários estendidos devido à demanda e outros fatores, mas os dias também podem ser encurtados devido ao mau tempo. As piscinas ficam ao ar livre, portanto a instalação pode fechar ou limitar o horário de funcionamento devido à chuva ou temperaturas baixas. As cargas elétricas da área de concessão são compostas principalmente por cargas cíclicas, como refrigeradores, freezers e aparelhos de ar condicionado, mas existem cargas constantes, como iluminação superior.

Uma pesquisa energética de duas semanas usando o Dranetz Plataforma de Energia EP1 was conducted from July 14, 2009 to July 28, 2009. The EP1 was connected to the dedicated 120V split phase sub panel feeding the concession area. Two model TR2550, 100A CT’s were used for current measurements.

Below is the demand profile recording during the survey with the Peak Demand overlaid. Data is show in DranView 6 software:

Survey results indicated the following:

• Peak demand measured during the period was 7.353 KW.
• Total electricity consumed was 1375.6 KWh
  • The survey ran for 13.95 days with an average consumption of about 98.5 KWh per day
• General observations
  • The demand was cyclical and peaked during mid day hours as expected.
  • More consistent demand profile was observed during the first week of the survey vs. the second week.
  • Local weather data during the monitoring period was obtained from the Internet and compared to the demand profile. The comparison indicated rain and poor weather conditions corresponded with the reduction and inconstancy of the demand measured during the second week of the survey. Since such weather is consistent with a normal summer in the area this demand data should be included in the overall 2 weeks results being considered normal.

Electricity Cost Estimation

The local utility is Public Service Electric & Gas (PSE&G) Companhia. New Jersey, being a deregulated state provides consumers the option to purchase electricity supply from an independent provider other than the delivery company. The facility owner chose PSE&G as the electricity supplier so both Delivery and Supply charges come from the one utility. Even though the swim club is a comparatively small consumer of electricity the utility bill is more complex than a residential bill. The utility rate structure applied is PSE&G’s GLP, General Lighting & Power rate. Also being the electricity supplier, PSE&G charges their BGS, Basic Generation Service rate structure for supply charges. The resultant utility bill demonstrates the complexity of billing in a deregulated energy environment and also the importance of understanding your electrical usage in order to manage and reduce your utility costs:

• Delivery:
  • Service charge: $4.27
  • Distribution charges
    • Annual Demand @ $3.9202/KW
    • Summer Demand @ $7.2755/KW
    • KWh charges @ $0.0145/KWh
  • Societal Benefits (recovery of costs incurred achieving government policy)
    • @ $0.0075/KWh
  • Securitization Transition (bond finance charges)
    • @ $0.0104/KWh
• Supply:
  • BGS Capacity (geração & transmissão)
    • This is a complex calculation that represents the customers share of the overall peak load assigned to the utilities transmission zone.
  • BGS Energy (tiered usage per KWh)
    • @ $0.1089/KWh (first tier <9755 KWh)

Being such a complex rate structure with many billing factors, it can be difficult to relate some of these costs to actual usage by the concession. Since the objective is to estimate worst utility costs, a fair method was found with the following assumptions taken into account:

• The operation of the swim club during the 2 week survey was deemed typical and representative an average two week period during peak summer months.
• Actual usage results will be used in the estimated charges opposed to determining a percentage of the concession usage vs. the overall bill.
• Service charge will be 100% paid by the owner.
• BGS capacity charge will be ignored since there is no fair way to determine the concessions portion of these charges. The owner will bear this charge.
• The various KW Demand and KWh Energy utility charges can be consolidated into one charge for KW and KWh portions of the estimate:
  • Consolidated KW Demand charge is: $11.1957
  • Consolidated KWh Energy charge is: $0.1413

By using DranView’s new,Energy Audit Report the Demand and Energy costs during the monitoring period can be easily determined and summarized:

Demand and Energy Summary Report Site: Willows Concession final Measured from 07/14/2009 11:12:09.0 para 07/29/2009 02:37:01.0 BILLING DAY OF MONTH: 1   DEMAND and ENERGY REPORT
Demand
	ON-PEAK (kW)	PARTIAL-PEAK (kW)	OFF-PEAK (kW)	MIN PF
Julho (*)	0.0	0.0	7.4	0.580
Max values	0.0	0.0	7.4	0.580
Energy Consumption
	ON-PEAK (kWh)	PARTIAL-PEAK (kWh)	OFF-PEAK (kWh)	CARBON FOOTPRINT (lb CO2)
Julho (*)	0.0	0.0	1375.6	720.8
Total Values	0.0	0.0	1375.6	720.8
(*) Indicates partial month.
Time of Use Billing Site: Willows Concession final Measured from 07/14/2009 11:12:09.0 para 07/29/2009 02:37:01.0 BILLING DAY OF MONTH: 1   TIME OF USE COSTS
Demand
	ON-PEAK ($)	PARTIAL-PEAK ($)	OFF-PEAK ($)
Julho (*)	0.0	0.0	82.3
Energy Consumption
	ON-PEAK ($)	PARTIAL-PEAK ($)	OFF-PEAK ($)
Julho (*)	0.0	0.0	194.4
Total Values	0.0	0.0	194.4
(*) Indicates partial month.

Fonte:
Dranetz
1000 Nova Durham Road, Edison, NJ 08818 EUA
Ligação gratuita: 800-372-6832
Telefone 732-287-3680