C04c_Attachment 2 - Specifications_1171637.pdf
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- Attached to
- Dehumidifier for walk-in cooler Federal contract opportunity
- Solicitation number
- 1232SA26Q1489
About this file
Summary of Dehumidifier Specifications Document
This document is a technical specifications file for a federal contract opportunity to procure and install a replacement commercial dehumidifier for a walk-in cooler at Rollins Farm in Columbia, Missouri. The dehumidifier is critical for maintaining optimal humidity levels for research-grade soybean and corn seed storage, as seed viability is essential to preserve years of research effort. The existing system is non-functional with obsolete parts that cannot be repaired.
The contractor must supply a non-cycling sorption-type dehumidifier with a single desiccant rotary structure that has been proven in satisfactory operation for a minimum of 10 years. The unit must feature a unitized aluminum welded casing, a monolithic fabricated desiccant wheel composed of inert silicates reinforced with uniform diameter glass fibers, and full face contact pressure seals to eliminate air and moisture leakage. The dehumidifier shall be factory-assembled and fully automatic, complete with HoneyCombe® desiccant wheel, reactivation heaters with stepless solid-state proportioning control, roughing filters, motors, fans, non-racheting desiccant drive unit, and automatic controller. Required specifications include 208-230/1/60 power connection, ETL listing conforming to UL Standard 1995 and CAN/CSA Standard C22.2 No. 236, hinged access panels for maintenance, electric reactivation heater assembly, solid-state control system with fault circuits, metal mesh inlet filters, 1/2-inch thick process inlet insulation, blast gate dampers (5-inch and 4-inch diameter), 5-inch round process inlet connection, and electric wall-mounted humidistat. Delivery, installation, and setup must be completed at 2305 Agronomy Research Drive, Columbia, Missouri 65203, within 60 days of contract award.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| C05a_ Attachment 2 - Amended Specifications_1232SA26Q14890001.pdf | ||
| C04b_Attachment 1 - Terms and Conditions_1232SA26Q1489.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. Dehumidifier shall be fully installed at the site, 2305 Agronomy Research Dr, Columbia, MO 65203.
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:
Delivery, installation, and set up:
2305 Agronomy Research Dr Columbia, MO 65203.
Delivery and installation required within 60 days of award
| CONTRACTOR REQUIREMENTS |
| 3.0 Technical Requirements/Tasks: |
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