C05a_ Attachment 2 - Amended Specifications_1232SA26Q14890001.pdf
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- Attached to
- Dehumidifier for walk-in cooler Federal contract opportunity
- Solicitation number
- 1232SA26Q1489
About this file
This document is a specification for the replacement of a commercial dehumidifier for a walk-in cooler facility. The dehumidifier is required for seed storage at Rollins Farm in Columbia, Missouri, where humidity control is critical to maintain the viability of research-grade soybean and corn seeds. The existing dehumidifier is non-functional with obsolete parts, making replacement necessary to prevent loss of research effort.
The contractor must provide a non-cycling sorption type dehumidifier with a single desiccant rotary structure featuring a unitized welded aluminum casing, HoneyCombe® desiccant wheel, and factory-assembled components including reactivation heaters, roughing filters, motors, fans, automatic controller, and all required auxiliaries. The unit must be proven in satisfactory operation for a minimum of 10 years and comply with NFPA 255-ASTM E84 standards and ETL listing (UL Std 1995, CAN/CSA Std C22.2 No. 236). Required specifications include 208-230V/1/60 power connection, stepless solid-state proportioning reactivation energy modulation, full face contact pressure seals rated for up to 3 inches of water gauge, hinged access panels for maintenance, metal mesh inlet filters, 1/2-inch process inlet insulation, 5-inch and 4-inch diameter blast gate dampers, 5-inch round process inlet connection, and an electric wall-mounted humidistat. Delivery is required within 60 days of award to 2305 Agronomy Research Drive, Columbia, Missouri 65203.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| C04b_Attachment 1 - Terms and Conditions_1232SA26Q1489.pdf | ||
| C04c_Attachment 2 - Specifications_1171637.pdf |
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Text version
Specifications Project: Dehumidifier for walk-in cooler
GENERAL INFORMATION
1.0 Scope of Work: Replacement of commercial size dehumidifier for walk-in cooler located at Rollins Farm, Columbia, MO.
2.0 Background: The walk-in cooler is utilized as seed storage for unique research grade soybean and corn. Humidity levels are crucial to maintain viability of seeds.
Loss of seed viability can result in the loss of several years of research effort. The antiquated system is not functioning and all efforts to repair have failed, as the parts are considered obsolete.
CONTRACTOR REQUIREMENTS
3.0 Technical Requirements/Tasks:
Dehumidifier shall be of a type proven in satisfactory operation for a minimum of
10 years. Dehumidifier shall be of the non-cycling sorption type with a single desiccant rotary structure. The casing will be fabricated as a unitized body with welded aluminum construction for maximum strength and durability. Suitable access panel shall allow access for inspection or servicing without disconnecting ducting or electrical wiring.
Airflow balancing dampers to be furnished.
The rotary structure shall be a monolithic fabricated extended surface consisting of inert silicates reinforced with uniform diameter glass fibers for maximum strength.
The fabricated structure shall be smooth and continuous in the direction of airflow without interruptions or sandwich layers which restrict airflow or create a leakage path at joining surfaces. Desiccant shall not channel, cake or fracture due to repeated temperature and moisture cycling. The materials of construction shall be water washable, non-toxic and NFPA 255-ASTM E84 compliant. Full face contact pressure seals shall be provided to separate the process and reactivation air streams and eliminate detrimental leakage of air or moisture with static pressure differentials of up to 3" of water gauge.
Dehumidifier shall be factory assembled; fully automatic, complete with HoneyCombe® desiccant wheel, reactivation heaters, reactivation energy control system, roughing filters, motors, fans, non-racheting desiccant drive unit, automatic controller and all components’ auxiliaries. Reactivation energy modulation shall be stepless solid state proportioning type.
The following specs are required:
208-230/1/60 power connection Durable housing with a welded aluminum construction Desiccant wheel and drive assembly ETL Listed, conforms to UL Std 1995, certified to CAN/CSA Std C22.2 No. 236 Hinged access panel for inspection and maintenance without disconnection of ducting or wiring
Electric reactivation heater assembly with energy modulation Solid state control system and control indicating package with fan and overheat fault circuits Process and reactivation fan and motor assemblies Metal mesh inlet filters Process inlet insulation to retard external condensation, 1/2" thick Blast gate dampers shipped loose: 5" diameter for the process airstream and 4" diameter for the reactivation airstream Process inlet connection, 5-inch round Electric wall mounted humidistat
5.0 Deliverables / Schedule:
2305 Agronomy Research Dr Columbia, MO 65203.
Delivery required within 60 days of award
| CONTRACTOR REQUIREMENTS |
| 3.0 Technical Requirements/Tasks: |
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