Calculation Without Tears Author : S. This program helps technicians understand the basic properties of air and how these properties relate to each other. Over the years, much has been written on the subject of Psychrometrics. However, much of this material has been geared toward engineering and system design. Psychrometrics Without Tears presents the important concepts of air in a manner that will appeal to HVAC students and service technicians.
Knowing all there is to know about an air sample is pretty empowering, so this book starts by discussing the basic properties of air and how these properties relate to each other. The Psychrometric chart is introduced to provide a visual representation of how air behaves when exposed to different conditions.
Once the basics of the chart are covered, we then move into some more interesting topics such as sensible heat ratio, bypass factor, and apparatus dew point temperatures. These properties help determine system performance and are very important concepts to learn in order to fully understand air. The plotting of actual systems follows next. This involves plotting out air distribution systems that are operating correctly so that we can see what properly operating systems look like on the chart.
This book covers a wide range of systems that includes residential heating and cooling systems as well as commercial systems that provide ventilation air to the occupied space to meet building code requirements.
Prepare to learn about mixed air systems and learn to calculate the mixed air conditions provided we know what the outside air and return air conditions are. In addition to everything mentioned already, we will discuss the concepts of ventilation, economizing and air balancing. Score: 5. This book is all about the success story of Pench Tiger Reserve, Seoni, Madhya Pradesh, which has been rated the number one tiger reserve in India by the Ministry of Environment and Forests since The valuable contribution of eco-tourism in the conservation of wildlife in the area has been explained.
Man-animal conflict is another field dealt with in this book, which is very vital for the conservation of wild animals. The various habitat components that are necessary for the conservation of wildlife have been highlighted.
This book will be useful for managers of wildlife areas and forest areas, students, environmentalists, policy makers and the public in general to understand the importance of wildlife and why it is necessary to conserve nature and wildlife for the very existence of mankind. A fancy word for heat! Over the years, much has been written on the subject of pressure enthalpy and most of it is geared toward engineers.
This program presents the important concepts of pressure enthalpy in a manner that will appeal to the service technician. Each refrigerant has its own properties and these properties are compiled on the pressure enthalpy chart for that particular refrigerant. The pressure enthalpy chart enables us to create a complete picture, or "snapshot" of the entire system.
With a completed pressure enthalpy plot, we can evaluate the major system components as well as calculate latent and sensible heat transfers. No matter what your business, you need to keep records, books of accounts, and complete annual returns. This book will help you when you are setting up your business, and to maintain a system of records which will: keep track of financial accounts; provide the necessary figures for tax and VAT returns; create a routine allowing more time for the actual business; and, give peace of mind knowing that all accounting functions are in place.
There are two types of calculus, analytical calculus, and computational calculus. Only analytical calculus is difficult. Computational calculus is very easy.
And, I don't mean 'easy' like algebra is easy algebra isn't easy or like geometry is easy geometry isn't easy. I mean easy like the equation distance equals velocity times time is easy - this equation IS computational calculus.
Computational calculus uses this equation for everything, including computing solutions to differential equations. Computational calculus was not useful before the advent of computers because it requires a lot of computations to get accurate results. Now, with the advent of computers, it is the dominant form of calculus used in the scientific world. Computational calculus is overlooked in calculus texts and is not taught, because it was not useful until fifty years ago, and, it's too easy!
The educational system has not caught up with the math that is being used in science and engineering. Calculus Without Tears begins with computational calculus. This new approach to teaching calculus will revolutionize the entire math and physics curriculum. Differential equations are, in plain English, velocity equations, and velocity equations are easy to understand, even if you don't have any math training at all.
The differential equations governing electrical components and circuits are just as easy to understand. However, while easy to understand, differential equations were notoriously difficult to solve.
But, that was before computers. Before computers, calculus was mainly 'analytical', that is, problems were solved by analysis, invention, and algebra. Most calculus problems are difficult to solve analytically, and many are impossible to solve. With computers there is another way to solve calculus problems, that is, numerically.
An example: while working at Honeywell I was responsible for estimating the accuracy of rocket trajectories used to launch satellites into orbit. Differential equations characterize the performance of the many system components, but the idea of combining and solving these differential equations analytically is not even imaginable. However, it's easy to solve the system numerically.
This is how it is actually done. See the Airplane Simulator page linked to the left for more details on the method. So, differential equations are the basis of modern science, they were always easy to understand, and now they are easy to solve. These lessons were written to teach calculus to a student starting in the 4th grade. The formal prerequisite is decimal arithmetic, that is, adding, subtracting, multiplying, and dividing easy decimal numbers.
Surprisingly, the fundamentals of calculus are easy and intuitive. In Vol. The presentation is rigorous in essence but not weighted down by technical details.
The goal is for the student to understand calculus and differential equations the way someone who works with them every day understands them, with a good intuitive grasp of the fundamental concepts. The lesson sheets are modeled after the ExcelMath lesson sheets used to teach the elementary school math curriculum. Each lesson consists of a brief presentation of some aspect of the subject being studied, followed by numerous easy exercises.
Math is a subject that must be learned by doing, and the exercises reinforce the subject of the lesson as well as review and integrate the material from previous lessons. The books are designed for self-study and homeschooling in that the pace is very slow and nothing is ommited.
Most of the exercises have multiple parts and the answers are added and the 'checksum' is printed in the upper right corner of the exercise so that you can check your work.
From the review on HomeSchoolMath. From the review of Vol 1 on EclecticHomeSchool. I wanted my husband's opinion on whether this was really calculus, for it seemed way too easy.
From the review of Vol 2 on EclecticHomeSchool. Yes, that's true. That's what the book Calculus Without Tears is all about. It starts from the simple situation of a runner running with constant speed velocity , and goes very step-by-step into actual calculus concepts, such as derivative, area under curve integration , and differential equations. But I never realized its use and richness until perusing these books. Mine was a theoretical study. This book gives you all application.
This is an answer to 'When are we ever going to have to use this? This 'study of change' could well transform your unmotivated mathematician into a rocket scientist or an engineer, physicist, astronaut I have an engineering PhD from Berkeley, and have worked many years in the aerospace industry on a variety of projects, including Star Wars! I also have taught high school math.
I currently have a daughter in the 4th grade.
0コメント