SOLICITATION NOTICE
41 -- Building 17 Ventilation
- Notice Date
- 5/28/2013
- Notice Type
- Combined Synopsis/Solicitation
- NAICS
- 238220
— Plumbing, Heating, and Air-Conditioning Contractors
- Contracting Office
- Department of Labor, Employment Training Administration, Grafton Job Corps Center, 100 Pine Street, North Grafton, Massachusetts, 01536
- ZIP Code
- 01536
- Solicitation Number
- 528131
- Archive Date
- 6/13/2013
- Point of Contact
- David K Field, Phone: 508-887-7362
- E-Mail Address
-
field.david@jobcorps.org
(field.david@jobcorps.org)
- Small Business Set-Aside
- N/A
- Description
- THIS IS A UBCONTRACTING OPPURTUNITY Building 17 is equipped with a 100% outdoor air handling unit (AHU) that during humid and/or very warm seasons delivers unconditioned air to the building that is unacceptable and troublesome. It is the intent to temper this outdoor air being supplied to the building. The equipment required to dehumidify and reduce the temperature of the outdoor supplied to the building will include a compressor package (mounted on the flat roof), an air-cooled condenser (set on an on-grade pad, situated near the location of where the NE and NW wings of the building join) and a duct-mounted, direct expansion evaporator (DX) coil at the discharge of the existing AHU. The new system shall have the capacity to dehumidify/cool 5,000 CFM with 360 MBH at the design conditions for Worcester, MA (the higher enthalpy of: the dry bulb with the coincidental wet bulb, or the wet bulb with the coincidental the dry bulb [see latest 95% outdoor ASHRAE Fundamentals]). The compressor package shall be located at the center of the flat roof (or as close as is practical). If this requires relocating existing condensing units, relocate existing condensing units. The compressor package shall use a non ozone-depleting refrigerant, have the ability to incrementally modulate capacity (screw or scroll, not unloading reciprocating) and contribute to a total system EER of 11.5 or better. The vertical refrigerant piping to/from the condenser unit and to/from the roof shall be given special attention (system shutdown, oil entrainment, vertical velocity, etc.). The equipment manufacturer shall design the refrigerant piping, or approve the submitted design of the contractor. This design and approval of design shall be submitted to DOL ESC for review. The existing roof-mounted AHU was designed to move 10,000 CFM. It is the intent of this project to treat half of this supply air with a DX coil and to bypass the coil with the other half (including a manual damper). The pressure drop across the coil/bypass arrangement shall not exceed 0.15" w.g. This is to produce a lower SHR through the coil and, therefore, deliver drier air to the building7. A discharge air enthalpy sensor is to control cooling capacity with an initial setpoint of 26.5 BTU/pound of dry air (adjustable). The coil must be installed in the AHU discharge duct and, therefore, be located on either the lower portion (half) of the discharge duct or the upper portion. This is due to the downstream horizontal "tee" change in direction. The coil size will require transition ducts entering and leaving the coil (transition duct per SMACNA). The coil will require additional support. The new duct shall be insulated and weatherproofed to equal the existing duct insulation at a minimum. After the installation of the above dehumidification/cooling system, perform testing and balancing of the four exhaust fans serving the second and third floor dorm shower/toilet (EFs) located in the attic space. This is to include the fans and all exhaust air inlets/grilles. The final report shall include the initial findings, the final results, the means taken to achieve the final results and any recommendations. The original design documents will be provided and considered the goal of the balancer. The AHU and EFs shall be controlled by new 7-day/24-hour programmable time clocks such that the equipment will operate only during occupied modes and for an additional one hour (adjustable). Two heating water pumps (5 HP) currently circulate water to ceiling-mounted radiant heating panels at all exterior wall zones. Install variable frequency drives to vary the pump motors' speed controlled by a return heating water temperature sensor (initially maintain 180° F, adjustable). We will have a scheduled walk-through of the project to be held on June 13,2013 at 10am. Attendance at the project walk-through is mandatory in order to submit a proposal. Awanrd Criteria will be as follows 1. Quality of proposal as it relates to the stated requirments. 2. Contractor experience including relevant past performance. 3. Price and relevant documentation. A copy of the full SOW may be obtained by contacting me at field.david@jobcorps.org. Phone calls will not be accepted.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/DOL/ETA/Graftonjcc/528131/listing.html)
- Place of Performance
- Address: 100 Pine St., North Grafton, Massachusetts, 01536, United States
- Zip Code: 01536
- Zip Code: 01536
- Record
- SN03073111-W 20130530/130528234940-84483f635b96903acd52dd562cd06492 (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
(may not be valid after Archive Date)
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