Preventative Heatstroke Cooling Shelter:

ASHRAE Design Competition

Andres Gomez

Errick Santana

Orangel Velazquez

EML 4551 Ethics and Design Project Organization

FIU Department of Mechanical Engineering

Miami, FL

Problem Statement

• Heatstroke• Symptoms

• Treatments

• Statistics• 675 people die due to heat exhaustion

yearly

• Average temperature

• School occurrences

Preventative Measurements

• Apparatuses:• Kestrel Heat Stress Meter

• Cooling Vest and accessories

• Cooling Centers around the country

Project Objective

• Build portable and reusable cooling shelter

• Shelter design must have two separate modes for cooling

• For dry hot climate

• For humid hot climate

• Achieve desired temperature in 10 minutes and maintain for an hour

• All cooling must be self generated

Project Objective

• Cost Efficiency

• Low power usage

• Low cost materials

• Reusable water

• Environmental Impact•Water waste keep to minimum•Materials

Design Alternative 1

• Advantages• Easily collapsible

• Conical design creating vortex of air flow.

• Lightweight

• Disadvantages • Restricts airflow at top

• Needs support to stand

Design Alternative 2

• Advantage• Sturdy Design

• Easier to setup

• Portable

• Obstacles• Difficult to install mist water flow

system

• Bulky in storage

Proposed Design

• Advantage• Lightweight <150lbs

• Easy hanging setup

• Portable

• Creates vortex air flow

• Obstacles• Creating solid 3-pt buckle connection

• Securing mist water flow system

• Diameter = 3ft• Height = 5.5 ft

Global Design Integration

• The shelter requires power from an outlet

• Two different voltages and frequencies around the world

• Device will accommodate to all global standards

Global Design Integration

• There are 15 different types of electrical outlet plugs around the world

• The cooling shelter will accommodate to all type of power outlets

Global Design Integration

• Shelter composed of various components

(fan, motor, mist water flow system, cooling Peltier plates)

• All parts can be individually replaced

• Simple end user replacement of all major components

• Use of cooling equipment is immediately ready for easy use when connected

Engineering Standards

• The ASHRAE Handbook (American Society of Heating, Refrigerating and Air-Conditioning Engineers)

• HVAC (Heating, ventilation and cooling) standards for components, and mechanism

• ASHRAE 55

• Establishes requirements to be meet when creating thermal indoor environments for human use .

• OSHA (Occupational Safety and Health Administration) Heat Index Guide

• Provides information and standards of safe temperatures for individuals working outside.

• Tables and charts to determine the likelihood of suffering a heat stroke based on outside conditions

Conclusion

• Three alternate designs were developed

• A final proposed design was completed

• All working components of the cooling shelter had been determined (Fan, Mist water flow system, Fabric, Hanging strap system )

Future Work• Flow Analysis and simulation of cooling shelter

• Calculate cooling Peltier plate efficiency and reliability

• Evaluate main cooling fan for optimal speed and dependability

• Analysis and simulation of fabric’s reflective performance under the sun

• Final build and testing of cooling shelter under various different environments