PPM for Heating & Cooling Technicians

by DeVore, Russell B.

• ISBN13: 9781401841775
• ISBN10: 1401841775
• Edition: 4th
• Format: Paperback
• Copyright: 2004-07-07
• Publisher: CENGAGE Delmar Learning

Summary

From basic arithmetic to using formulas, this fully updated edition applies essential practical math skills directly to the field of heating and cooling technology. All math concepts use terminology specific to the HVAC-R trade to help technicians prepare for problems they will encounter on the job. The entire range of mathematics problems used in the field are covered - from whole numbers, fractions, ratio and proportion, to percentages, measures, formulas, and trigonometry. Useful practice opportunities in the book also help readers learn to write up estimates and bills.

Table of Contents

Preface	viii
Introduction	ix
Calculators	ix
Hints about Estimating	x
Introduction to Measurement	xi
SECTION 1 WHOLE NUMBERS	1	(26)
Addition of Whole Numbers	1	(6)
Subtraction of Whole Numbers	7	(5)
Multiplication of Whole Numbers	12	(5)
Division of Whole Numbers	17	(5)
Combined Operations with Whole Numbers	22	(5)
SECTION 2 COMMON FRACTIONS	27	(34)
Addition of Common Fractions	27	(11)
Subtraction of Common Fractions	38	(7)
Multiplication of Common Fractions	45	(6)
Division of Common Fractions	51	(4)
Combined Operations with Common Fractions	55	(6)
SECTION 3 DECIMAL FRACTIONS	61	(28)
Addition of Decimal Fractions	61	(6)
Subtraction of Decimal Fractions	67	(4)
Multiplication of Decimal Fractions	71	(4)
Division of Decimal Fractions	75	(5)
Decimal and Common Fraction Equivalents	80	(5)
Combined Operations with Decimal Fractions	85	(4)
SECTION 4 RATIO AND PROPORTION	89	(11)
Ratio	89	(4)
Proportion	93	(7)
SECTION 5 PERCENT, PERCENTAGE, AND DISCOUNT	100	(10)
Percent and Percentage	100	(5)
Discounts	105	(5)
SECTION 6 DIRECT MEASURE	110	(38)
Equivalent Units of Temperature Measure	110	(8)
Angular Measure	118	(8)
Units of Length Measure	126	(6)
Equivalent Units of Length Measure	132	(5)
Length Measure	137	(11)
SECTION 7 COMPUTED MEASURE	148	(33)
Area Measure	148	(10)
Equivalent Units of Area Measure	158	(10)
Rectangular Volumes	168	(8)
Cylindrical Volumes	176	(5)
SECTION 8 FORMULAS	181	(27)
Ohm's Law and Electrical Relationships	181	(8)
Gas Laws	189	(7)
Heat Load Calculations	196	(12)
SECTION 9 STRETCHOUTS AND LENGTHS OF ARCS	208	(26)
Stretchouts of Square and Rectangular Ducts	208	(9)
Stretchouts of Circular Ducts	217	(8)
Lengths of Arcs of Circles	225	(9)
SECTION 10 TRIGONOMETRY	234	(13)
Trigonometric Functions	234	(13)
SECTION 11 GRAPHS	247	(9)
Graphs and Graphing	247	(9)
SECTION 12 BILLS	256	(11)
Estimates and Bills	256	(11)
Appendix	267	(19)
Glossary	286	(3)
Answers to Odd-Numbered Problems	289