Methodology : MM_PM006
| Methodology No. | MM_PM006 |
|---|---|
| Sectoral scope | 3. Energy demand |
| Title | Introduction of cascade cooling system and/or temperature stratification tank at the beer factory |
| Summaries |
GHG emission reduction measures : This methodology is applied to one of the following cases: Case 1) Installation of both CCS and temperature stratification tank; Case 2) Installation of only CCS; Case 3) Installation of only temperature stratification tank. GHG emission reduction measures ([A], [B], [C], [D]) are realized for each equipment in the following cases: Case 1) A (for chiller), B&C (for process pump) and B&D (for chiller pump); Case 2) A (for chiller), B (for process pump) and B (for chiller pump); Case 3) C (for process pump) and D (for chiller pump). [A] A cascade cooling system, in which multiple refrigerators are arranged in cascade to step down the temperature, improves the efficiency of total cooling system compared to a system where brine chillers are used in parallel to achieve the same cooling output. It leads to reduction of power consumption and consequently GHG emissions. [B] The amount of cold heat required on the demand side is the same for the project condition and the reference condition. Since a large temperature difference is needed in order to install CCS, a larger heat exchanger than reference system is installed on the demand side. As a result, the brine temperature difference becomes larger than reference refrigeration system, and the same amount of cold heat can be given with a small flow rate of brine. It leads to reduction of electricity consumption of process pump and chiller pump connected to CCS and consequently GHG emissions. [C] By setting the head of the stratification tank higher than the head of the whole cooling process, the pressure of brine is not released, which results in the reduction of energy consumption of process pump for the temperature stratification tank and consequently GHG emissions. [D] Since a volume of brine stored in temperature stratification tank is more than that stored in reference small brine tank, the operation of chiller pump can be controlled intermittently. Under the reference condition (small brine tank), chiller pump is usually operated 24 hours a day. Therefore, it leads to reduction of electricity consumption of chiller pump and consequently GHG emissions. Calculation of reference emissions : Reference emissions are calculated for each equipment in each case. Calculation of project emissions : Project emissions are calculated for each equipment in each case. Monitoring parameters : Case 1) Electricity consumption of CCS, Electricity consumption of process pump, Electricity consumption of chiller pump, Total flow of brine entering CCS, Average flow rate of brine which is sent by chiller pump, Operation days of cooling process; Case 2) Electricity consumption of CCS, Electricity consumption of process pump, Electricity consumption of chiller pump, Total flow of brine entering CCS; Case 3) Electricity consumption of process pump, Electricity consumption of chiller pump, Average flow rate of brine which is sent by chiller pump, Operation days of cooling process |
| Status | Public inputs closed |
| Methodology Proponent | Kirin Holdings Company, Limited. |
| Proposed Methodology | |
| Public inputs |
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