Method of calculating electric power consumption saving effect in energy-saving drive support method and system

A technology that consumes power and saves energy. It is applied in the field of energy-saving service provision, and can solve the problems of increasing, adding, and incapable of switching operation of measurement items.

Inactive Publication Date: 2009-01-07
HITACHI LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, after the instantaneous power consumption measurement during the operation of the inverter, which is measured every moment, by switching to damper control under commercial power and performing the measurement, the power consumption in the same gas state can be measured. , its differential value can be used as a power saving effect, but as a practical problem, switching operations cannot be performed
In addition, a method of measuring the state of inhaled gas is also considered, but a new problem arises, that is, adding a measurement sensor and increasing the number of measurement items

Method used

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  • Method of calculating electric power consumption saving effect in energy-saving drive support method and system
  • Method of calculating electric power consumption saving effect in energy-saving drive support method and system
  • Method of calculating electric power consumption saving effect in energy-saving drive support method and system

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Embodiment Construction

[0029] Next, one embodiment of the present invention will be described with reference to the drawings.

[0030] First, refer to Figure 1 to Figure 8 For the description of the business form of the ESCO business involved in the present invention, refer to Figure 9 ~ Figure 11 The calculation method of the energy saving which is the characteristic technique of this invention is demonstrated.

[0031] figure 1 It is an explanatory diagram showing the business form of the ESCO business. figure 1 It shows that the contractor A has the target load equipment described later, and concludes a predetermined contract (contract including the distribution of profit money) with the contractor B, and the payment of the fee is performed through the credit company. The contract signed by Contractor A (user), Contractor B (service provider) and the credit company is indicated by arrow 14 . Target load equipment refers to equipment with fans or blowers 1, pumps 2, etc. used in the above-me...

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Abstract

The invention provides consumption power saving calculation method in energy-saving operation support method which makes user wishing to save energy accept target energy-saving service without any initial investment; in addition, the energy-saving service supplier can anticipate enough benefit. A inverter (5)is employed for converting operation frequency of AC electromotor and a calculation device (26) is operated for energy saving of inverter in operation. The calculation device (26) converts power consumption and frequency of inverter to commercial frequency, calculates the input power of inverter, multiplies input power with efficiency of inverter, calculates input power to AC electromotor, multiplies electromotor input power with axial power reduction rate when controlled by frequency-equivalent machine, thus reference power before introducing to inverter is obtained, and saved power is obtained by subtracting consumption power in operation from reference power.

Description

technical field [0001] The present invention relates to a method for providing energy-saving services, and relates to a method for calculating power consumption saving effects in an energy-saving operation support method suitable for energy-saving operation in factories and the like, an energy-saving operation support system, and a calculation program for saving power. Background technique [0002] At the Kyoto Conference on Global Warming Prevention held in December 1997, Japan's greenhouse reduction target was set at 6% of the 1990 level. Taking this as an opportunity, the "Law Concerning the Rationalization of Energy Use (Energy Conservation Law)" was amended and came into force in April 1999. [0003] Until now, although only large-scale factories have been given the obligation to commit to energy conservation, through this amendment, the scope of application of the law has also been expanded to medium-sized factories. On the other hand, conventionally, fans, blowers, a...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G06Q50/00H02P27/04H02M7/48G01R21/00G01R11/00G01R22/00G01R22/06H02J3/00H02J3/14
CPCG01R21/133H02P23/0036H02P23/0004Y02P80/10
Inventor薮谷隆樱井正树阿部纯
OwnerHITACHI LTD