114 Texas A&M International University C/ APPENDIX Prepared by Texas Registered Engineering Firm F-2113 March 2023 PLUMBING UTILITIES A. TAMIU EXISTING UTILITIES REVIEW Natural Gas The campus is currently served from the Central Plant via a line from Centerpoint Energy. The line goes through a meter and pressure reducing station and then splits into two lines, a 6” 10psi line and a 3” 5psi line. The 6” line serves the mechanical equipment in the Central Plant and the 3” line serves the Phase 1 buildings on campus and several others. The 3” line is at capacity and there is not room for additional building to be added to this line. The 6” line can provide a maximum of 123,000 CFH at a 10% pressure drop. The current load on the line is 15,700 CFH, which is 2,500 CFH for domestic water boilers and 13,200 for heating hot water boilers. Based on Mechanical recommendations for the expansions and increased domestic hot water load, an additional 25,000 CFH of natural gas will be required. The total demand on the 6” natural gas line will be 40,700 CFH. There is adequate capacity for the additional mechanical and domestic water equipment to serve the campus expansion. Domestic Hot Water Domestic hot water is provided via a campus loop to all of the existing buildings on campus except for RLC, UPD, and UVIL. At these 3 locations domestic hot water is generated locally. The DHW for the campus loop is generated at the Central Plant by two boilers that can provide 1,241 gph recovery each. During the site visit only one boiler was running, and it was running at 50%, so it is believed that there is capacity in the existing equipment to serve the Near-Term and Mid-Term expansions. However, the existing distribution loop throughout the campus appears to be at capacity. B. RECOMMENDATIONS Near-Term The Near-Term expansion is comprised of a Health Science Center building (A), a Nursing Education building (B), a Business Addition to the existing Western Hemisphere Trade Center building (C), and an Alumni Center at the current location of University Village (D). The DHW for buildings A and B will be provided by routing piping from an existing tap to the domestic hot water system loop that was installed but not connected to any buildings. The 3” supply and 2” return lines will be extended to the area between buildings A and B to serve them. The lines will also be valved and capped in a way to allow for connection of two buildings in the Mid-Term phase. A third boiler of the same capacity as the two existing boilers will be installed in order to provide redundancy for the DHW supply. The DHW for building C will be provided via connection to the Western Hemisphere Trade Center building. DHW will be generated locally at building D.
RkJQdWJsaXNoZXIy Mzk1Mzc4