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Four Points Engineering and Design Project 99.04: Heat Pump Design for Whalen Co. FPED Team Members: Ricardo Blackett, Andy Parke, Scott Quirico, Brian Zigmond
Four Points Engineering and Design
Project 99.04: Heat Pump Design for Whalen Co.
FPED Team Members:Ricardo Blackett, Andy Parke, Scott Quirico, Brian
Zigmond
Heat Pump Design
• Team 4– Ricardo Blackett : [email protected]– Andrew Parke : [email protected]– Scott Quirico : [email protected]– Brian Zigmond : [email protected]
Customer: Whalen Co.Advisor: Dr. Keefe
Presentation Agenda
1. Introduction and background revisited.2. Method a. Metrics b. Benchmarks c. Concepts3. Schedule
Project Background
• By 2000, ARI will require that no standing water be allowed in HVAC systems.
• This prompts Whalen Co., manufacturer of HVAC equipment specifically for high-rise buildings, to redesign the current condensate drip pan in their vertical water source heat pump.
• In the redesign, other improvements were suggested...
Thus, the problem as presented to FPED has 3 components:
• Eliminate the standing water in the condensate drain pan of the unit.
• Improve the circulation in the “two room” units.
• Lower the operating noise level.
Mission
• In the allotted time and as economically as possible FPED will:
1. Eliminate standing water in Whalen’s vertical heat pump
2. Decrease unit’s noise level
3. Improve circulation in the two-room units
Our Approach
ProjectRequirements
Whalen’s problem
CompetitiveBenchmarking
PresentFPED’s Solution
to Whalen Co.
DevelopConcept
Produce a unit that:• eliminates standing water• is quieter• has improved room circulation
We Are Here
Constraints
Size and geometry of unit and enclosure.Regulatory commission specifications. (ARI, UL)
Customers and Wants
• Internal to Whalen• Executive
• Production
• Sales
• Engineering• External • Consumer• NCDA
• Affordability, improved circulation.
• Ease of fabrication / installation.• Affordability, improved
circulation.• Improved circulation, ease of
fabrication.
• Affordability, quiet
• Design process
Metrics and Target Values• Cost of Materials• Cost of Manufacturing• Air Changes per Hour in Adjacent
Room• Number of Parts• Assembly Line Costs• Fabrication Time• Installation Time• Down Time• Repair Time• Decibel Level• Grade
• About $15 per pan• About $52 per pan• > 0
• About 12• Minimum• 1/2 hour/pan• 1/2 hour/pan• Minimum• 4 Hours• Less than Current Value• A
System Benchmarking: Competitors and Best Practices...
• Trane: Well insulated unit gives quiet performance, removable drain pan for easy maintenance.
• ClimateMaster: Removable chassis for easy maintenance, sound-suppressing baffles on intakes.
Drain Pan Insert
Materials selection is in progress. Ease of manufacturing and cost of materials is being considered.
Actual geometry of insert to be determined upon physical inspection of unit.
Two Room Air Draw
Two Room Air Draw continued…
• Extend the width of the enclosure slightly to allow ducting of air flow from both rooms.
• Relocation of existing cooling coil within heat pump to accommodate return in rear of unit.
Sound Suppression Benchmarking
• Elastomer Isolators– Use natural rubber to
absorb vibration and shock to reduce noise
– Directly incorporated into the structural components of unit
– Installed in series or parallel for greater load capacity
• External Sound Attenuator– Combination of
baffles and insulation that attaches to ductwork
– Mainly used in industrial applications
Sound Suppression Concepts
• Insert neoprene or rubber insulating mat between unit and floor to eliminate noise from vibrations.
• Isolate fan and compressor motor from chassis through grommets and mountings.
• Improve or add insulation to unit.• Attach external sound attenuator.
Sound Suppression Evaluation
Budgeting
• The established budget from Mr. Whalen is to “provide a unit and any and all materials needed within reason.”
• Through FPED’s efforts to minimize all costs, and NCDA’s experience, past agreements similar to this method have been successful.
ACTUALLY Since Last Time...
…And Until the Next Time
The Big Picture
Who Done It……..
• Ric- keep minutes of meetings, scheduler, SSD
• Zig- HVAC, competitor tracking, spokesman
• Scott-Mediator, functional benchmarking• Andy-machine shop, materials, target
values for metrics
