Asphalt

Asphalt Heating Facility

Final Report

Design of Thermal-Fluid Systems

ENME 3773

Dr. Guillot

Written by:

12/9/2010

Table of Contents

Introduction 3

Design Approach 5

a. Feasibility of design method 8

b. Operability 8

c. Health & Safety 8

d. Manufacturability 9

e. Economic 9

Results 10

Conclusions 11

References 12

Introduction

The objective of this project was to design a piping system that transports liquid asphalt from a storage tank (60’ diameter by 32’ tall) 1000’ away. The asphalt must remain heated year round and be available to by pumped anywhere from 1000 GPM to 4000 GPM. A mixer to stir the asphalt must be purchased as well as control valves for the piping system. The facility used for the design has an existing infrastructure in place with available Theminol heating; however it is not required to use the Therminiol to heat the asphalt. The entire piping system should be designed to have a life of 20 years. The first costs and annual operating costs are required to be calculated.

Storage tank

Storage tank

Heating Coils

Heating Coils

Mixer

Mixer

Figure 1: Mixer and Heating Coil

Figure 1: Mixer and Heating Coil

Figure 2: Asphalt Storage Tank

Figure 2: Asphalt Storage Tank

Figure 3: Schematic of Top and side view of Tank and piping system

Figure 4: Schematic of Agitator

The first step in designing a piping system to pump asphalt as well as meet the specified flow requirement is to gather as much information about the material being pumped as possible. With knowledge of the asphalt properties material can be considered for the piping system as well as the insulation and control valve. In order to find the optimal diameter of pipe to carry up to 4000 gpm, a piping diameter must be assumed. Using an iterative procedure and computed values of the Reynolds number and velocity, the optimal piping diameter can be calculated by computing the NPSHa. After choosing the optimal...