100 Texas A&M International University C/ APPENDIX B. CHILLED WATER ANALYSIS Texas A&M International University uses chilled water as its primary means of campus cooling. The campus has one central plant distributing chilled water through a common piping system. Refer to Appendix II for a site plan showing the existing conditions of the campus thermal piping routing and sizes. The current central plant cooling capacity is 4,000 total tons with 3,000 tons of firm capacity. The current campus peak cooling demand is 2,300 tons. The current cooling equipment is listed in Table 1 below: The university is planning to add about 1,200,000 square feet by 2040. This growth will increase the cooling demand of the campus. Table 2 below shows the load factors associated with each type of building planned. The load factors are based on historical data for similar buildings. Tables 3, 4, and 5 break down the growth in cooling demand between phases 1, 2, and 3 of the campus expansion, respectively. A campus wide diversity factor of 70% was used. This diversity factor takes into account that all buildings will not have their peak demands at the same time. The “Key” assigned to each building represents the name of the building on the master plan site plan. The increase in cooling demand for the expected campus growth is about 3,370 tons total. The current campus cooling demand is estimated to be 2,300 tons based on the analysis of the metered data available. Refer to Appendix I for reported daily campus max/min system demand and flowrates. Based on the growth described above and the collected campus data, the new campus cooling demand will be 5,850 tons. This requires 3,000 tons of cooling capacity to be added to the current firm capacity of 3,000 tons. Additional cooling capacity will be provided by expanding the existing central plant in campus expansion phases 2 and 3. The existing chilled water plant is designed to be expanded to the south. When this expansion is complete, an additional 3,000 tons of firm capacity will be available to the campus. Additionally, new chilled water piping infrastructure will be necessary to serve the campus growth in the SouthEast direction towards University Blvd. Refer to Appendix II for site plans of the additional chilled water piping necessary for campus expansion at each phase of development. 2825 WILCREST DRIVE, SUITE 350 • HOUSTON, TEXAS 77042 • PH: 713.780.7563 • FAX: 713.780.9209 • WWW.SHAHSMITH.COM HOUSTON • AUSTIN • DALLAS B. Chilled Water Analysis Texas A&M International University uses chilled water as its primary means of campus cooling. The campus has one central plant distributing chilled water through a common piping system. Refer to Appendix II for a site plan showing the existing conditions of the campus thermal piping routing and sizes. The current central plant cooling capacity is 4,000 total tons with 3,000 tons of firm capacity. The current campus peak cooling demand is 2,300 tons. The current cooling equipment is listed in Table 1 below: Table 1: Existing Chilled Water Capacity Equipment Location Age Capacity Chiller 1 Central Plant 1 Year 1,000 Chiller 2 Central Plant 25 Years 1,000 Chiller 3 Central Plant 1 Year 1,000 Chiller 4 Central Plant 17 Years 1,000 Total Capacity 4,000 Firm Capacity 3,000 The university is planning to add about 1,200,000 square feet by 2040. This growth will increase the cooling demand of the campus. Table 2 below shows the load factors associated with each type of building planned. The load factors are based on historical data for similar buildings. Table 2: Building Cooling Load Factors Building Type BGSF/TON Support 325 Housing 300 Academic 250 Research 125 Tables 3, 4, and 5 below break down the growth in cooling demand between phases 1, 2, and 3 of the campus expansion, respectively. A campus wide diversity factor of 70% was used. This diversity factor takes into account that all buildings will not have their peak demands at the same time. The “Key” assigned to each building represents the name of the building on the master plan site plan. The increase in cooling demand for the expected campus growth is about 3,370 tons total. 2825 WILCREST DRIVE, SUITE 350 • HOUSTON, TEXAS 77042 • PH: 713.780.7563 • FAX: 713.780.9209 • WWW.SHAHSMITH.COM HOUSTON • AUSTIN • DALLAS PAGE 3 OF 6 B. Chilled Water Analysis Texas A&M International University uses chilled water as its primary means of campus cooling. The campus has one central plant distributing chilled water through a common piping system. Refer to Appendix II for a site plan showing the existing conditions of the campus thermal piping routing and sizes. The current central plant cooling capacity is 4,000 total tons with 3,000 tons of firm capacity. The current campus peak cooling demand is 2,300 tons. The current cooling equipment is listed in Table 1 below: Table 1: Existing Chilled Water Capacity Equipment Location Age Capacity Chiller 1 Central Plant 1 Year 1,000 Chiller 2 Central Plant 25 Years 1,000 Chiller 3 Central Plant 1 Year 1,000 Chiller 4 Central Plant 17 Years 1,000 Total Capacity 4,000 Firm Capacity 3,000 The university is planning to add about 1,200,000 square feet by 2040. This growth will increase the cooling demand of the campus. Table 2 below shows the load factors associated with each type of building planned. The load factors are based on historical data for similar buildings. Table 2: Building Cooling Load Factors Building Type BGSF/TON Support 325 Housing 300 Academic 250 Research 125 Tables 3, 4, and 5 below break down the growth in cooling demand between phases 1, 2, and 3 of the campus expansion, respectively. A campus wide diversity factor of 70% was used. This diversity factor takes into account that all buildings will not have their peak demands at the same time. The “Key” assigned to each building represents the name of the building on the master plan site plan. The increase in cooling demand for the expected campus growth is about 3,370 tons total. 2825 WILCREST DRIVE, SUITE 350 • HOUSTON, TEXAS 77042 • PH: 713.780.7563 • FAX: 713.780.9209 • WWW.SHAHSMITH.COM HOUSTON • AUSTIN • DALLAS PAGE 4 OF 6 A Health Sciences 57,000 253 B Nursing 67,200 299 C Business Addition 22,500 100 Total at 70% diversity 460 Table 4: New Cooling Demand in Phase 2 Key* Building Name GSF Tonnage F Student Housing 169,200 564 G Academic Building 91,500 407 H Academic Building 65,400 291 Total at 70% diversity 890 Table 5: New Cooling Demand in Phase 3 Key* Building Name GSF Tonnage I FPA Expansion 55,782 248 J Student Housing 92,860 310 K Academic Building 104,925 466 L Academic Building 115,600 514 M Academic Building 60,555 269 N Academic Building 98,667 439 O Student Life 41,000 126 P Administration 50,600 156 Q Administration 50,600 156 T New Business School 46,341 206 Total at 70% diversity 2,020 The current campus cooling demand is estimated to be 2,300 tons based on the analysis of the metered data available. Refer to Appendix I for reported daily campus max/min system demand and flowrates. Based on the growth described above and the collected campus data, the new campus cooling demand will be 5,850 tons. This requires 3,000 tons of cooling capacity to be added to the current firm capacity of 3,000 tons. Additional cooling capacity will be provided by expanding the existing central plant in campus expansion phases 2 and 3. The existing chilled water plant is designed to be expanded to the south. When this expansion is complete, an additional 3,000 tons of firm capacity will be available to the campus. Additionally, new chilled water piping infrastructure will be necessary to serve the campus growth in the SouthEast direction towards University Blvd. Refer to Appendix II for site plans of the additional chilled water piping necessary for campus expansion at each phase of development. C. Heating Analysis Table 3: New Cooling Demand in Phase 1 Key* Building Name GSF Tonnage A Health Sciences 57,000 253 B Nursing 67,200 299 C Business Addition 22,500 100 Total at 70% diversity 460 Table 4: New Cooling Demand in Phase 2 Key* Building Name GSF Tonnage F Student Housing 169,200 564 G Academic Building 91,500 407 H Academic Building 65,400 291
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